Examination for Japanese University Admission (EJU) â Questions and Answers
Question 1: åäœäœã§ãã ³âµCl 㚠³â·Cl ã®é¢ä¿ã«ã€ããŠãæ£ããèšè¿°ã¯ã©ããã
- äžæ§åã®æ°ã¯åãã ããéœåã®æ°ãç°ãªãã
- éœåã®æ°ã¯åãã ããäžæ§åã®æ°ãç°ãªãã (Correct answer)
- éœåãšäžæ§åã®äž¡æ¹ã®æ°ãç°ãªãã
- éœåã®æ°ã¯åãã ããååŠçæ§è³ªã倧ããç°ãªãã
Correct answer: éœåã®æ°ã¯åãã ããäžæ§åã®æ°ãç°ãªãã
åäœäœïŒã¢ã€ãœããŒãïŒãšã¯ãååçªå·ïŒéœåã®æ°ïŒãåãã§ãè³ªéæ°ïŒéœåã®æ°ãšäžæ§åã®æ°ã®åèšïŒãç°ãªãååå士ã®é¢ä¿ãæããŸãã³âµCl 㚠³â·Cl ã¯ã©ã¡ããå¡©çŽ ååãªã®ã§ãéœåã®æ°ã¯åã17åã§ããããããè³ªéæ°ã35ãš37ã§ç°ãªããããäžæ§åã®æ°ãç°ãªããŸãïŒÂ³âµClã¯18åã³â·Clã¯20åïŒã
Question 2: ïŒé³å£°ïŒ 倧åŠã®äºå宀ããåŠçãžã®çå®çªé»è©±ã¡ãã»ãŒãžã§ãã ãããã«ã¡ã¯ãABC倧åŠã®åŠç課ã§ããçåŠçã®ãã ã»ãã³ãžã¥ã³ããã«ãç¥ããã§ããå æ¥ç³è«ããã奚åŠéã®æžé¡ã§ãããäžãæã眲åãæããŠãããšããããããŸããã倧å€ç³ãèš³ãããŸããããä»é±ã®éææ¥ãŸã§ã«ãåŠç課ã®çªå£ãŸã§ãè¶ãããã ããŸãã§ããããã詳ããå Žæã¯æžé¡ã®è£ã«æžããŠãããŸãã®ã§ããã¡ããã確èªãã ããããããããé¡ãããŸããã ïŒè³ªåïŒ ãã ããã¯ããªã倧åŠã®åŠç課ã«è¡ããªããã°ãªããŸãããã
- æžé¡ã«çœ²åã远å ããããã (Correct answer)
- 奚åŠéãåãåãããã
- æžé¡ã®æžãæ¹ãæããŠãããããã
- æ°ãã奚åŠéã«ç³ã蟌ãããã
Correct answer: æžé¡ã«çœ²åã远å ããããã
ã¡ãã»ãŒãžã§ã¯ããäžãæã眲åãæããŠãããšããããããŸããããšèšã£ãŠããããã®ããã«éææ¥ãŸã§ã«åŠçèª²ã«æ¥ãããã«äŸé ŒããŠããŸãããããã£ãŠããã ããã¯è¶³ããªã眲åãããããã«åŠç課ãžè¡ãå¿ èŠããããŸãã
Question 3: What is the cold ocean current that flows southward along Japan's northeastern Pacific coast?
- Kuroshio Current
- Agulhas Current
- Tsushima Current
- Oyashio Current (Correct answer)
Correct answer: Oyashio Current
The Oyashio Current is a cold subarctic current flowing southward along Japan's northeastern coast; where it meets the Kuroshio, rich fishing grounds are created.
Question 4: èµ€ç·è²èŠç°åžžã¯Xæè²äœäžã®æœæ§éºäŒåã«ãã£ãŠèµ·ãã䌎æ§éºäŒã§ãããç¶èŠªãèµ€ç·è²èŠç°åžžã§ãæ¯èŠªããã®éºäŒåãæããªãïŒæ£åžžãªïŒå ŽåãçãŸããŠããç·ã®åãèµ€ç·è²èŠç°åžžã§ãã確çã¯äœ%ãã
- 50%
- 0% (Correct answer)
- 100%
- 25%
Correct answer: 0%
ç·ã®åã¯æ¯èŠªããXæè²äœããç¶èŠªããYæè²äœãåãç¶ãããã®å Žåãæ¯èŠªã¯èµ€ç·è²èŠç°åžžã®éºäŒåãæããªãæ£åžžãªXæè²äœããæã£ãŠããªãããããã£ãŠãæ¯èŠªããåãç¶ãXæè²äœã¯å¿ ãæ£åžžãªãã®ã§ãããããçãŸããŠããç·ã®åãèµ€ç·è²èŠç°åžžã«ãªãããšã¯ãªãã確çã¯0%ã§ããã
Question 5: The substances listed below are believed to have been in existence or formed during the process of chemical evolution that preceded the emergence of life. From the choices below, choose the answer that correctly arranges a - c in the order in which they appeared. <br><br> (a) Proteins, nucleic acids, etc. <br> (b) Amino acids, sugars, phospholipids, etc. <br> (c) Hydrogen sulfide, hydrogen, ammonia, methane, etc.
- a â b â c
- a â c â b
- c â b â a (Correct answer)
- b â c â a
- b â a â c
- c â a â b
Correct answer: c â b â a
Explanation: <br> (c) Hydrogen sulfide, hydrogen, ammonia, methane, etc.: These are simple inorganic molecules that were likely present in the early Earth's atmosphere or hydrothermal vents. <br> (b) Amino acids, sugars, phospholipids, etc.: These are organic molecules that could have formed through prebiotic chemistry, such as the Miller-Urey experiment, which simulated conditions believed to be present on early Earth. <br> (a) Proteins, nucleic acids, etc.: These are complex biomolecules that are essential for life and likely formed later, possibly through the polymerization of simpler organic molecules. <br><br> This sequence reflects a plausible progression from simple inorganic molecules to more complex organic molecules during the early stages of chemical evolution on Earth.
Question 6: ïŒé³å£°ïŒ ç·ã®åŠçãšå¥³ã®åŠçã話ããŠããŸãã 女ïŒå±±ç°ãããæ¥é±ã®äœè€å çã®ææ¥ãã¬ããŒãã®ç· ãåãã ãããããçµãã£ãïŒ ç·ïŒãããããŸã ã ããããŒããæ±ºãŸããªããŠãæŽå²ã®äººç©ã«ã€ããŠæžãããšæã£ãŠããã ãã©ãå€ãããŠéžã¹ãªããã ã 女ïŒãããªãã ãç§ã¯ãå é±å çã玹ä»ããŠãããæ¬ãèªãã§ãé¢çœãã£ãããããã®æ¬ã®å 容ã«ã€ããŠæžãããšã«ãããã ç·ïŒããããã®æ¬ããåãèªãã§ã¿ããã©ãã¡ãã£ãšé£ãããŠããã£ã±ãã人ç©ã®ã»ããæžããããããªã 女ïŒãããã峿žé€šã§äžç·ã«è³æãæ¢ããªãïŒç§ããŸã æžãå§ããŠãªããããæäŒããã ç·ïŒæ¬åœïŒå©ãããïŒ ïŒè³ªåïŒ ç·ã®åŠçãå°ã£ãŠããããšã¯äœã§ããã
- ã¬ããŒãã®ããŒããæ±ºãŸããªãããšã (Correct answer)
- å çã玹ä»ããæ¬ãé£ããããšã
- ã¬ããŒãã®æžãæ¹ãåãããªãããšã
- 峿žé€šã§è³æãèŠã€ãããªãããšã
Correct answer: ã¬ããŒãã®ããŒããæ±ºãŸããªãããšã
ç·ã®åŠçã¯ããããŒããæ±ºãŸããªããŠããšæç¢ºã«è¿°ã¹ãŠããŸããæŽå²ã®äººç©ã«ã€ããŠæžããšãã倧æ ã¯ãããŸãããå ·äœçã«èª°ã«ããããéžã¹ãã«å°ã£ãŠããŸããããã圌ã®çŸåšã®äž»ãªåé¡ã§ãã
Question 7: Snell's Law relates which two quantities at the interface between two media?
- The amplitudes of the incident and reflected waves
- The speeds of sound in the two media
- The angles of incidence and refraction and the refractive indices of the two media (Correct answer)
- The frequencies of the incident and refracted waves
Correct answer: The angles of incidence and refraction and the refractive indices of the two media
Snell's Law states n1 sin Ξ1 = n2 sin Ξ2, relating the refractive indices and angles of incidence and refraction.
Question 8: The graph of the function y = f(x) is translated 3 units to the left and 4 units down. Which of the following equations represents the new graph?
- y = f(x - 3) - 4
- y = f(x + 3) + 4
- y = f(x + 3) - 4 (Correct answer)
- y = f(x - 3) + 4
Correct answer: y = f(x + 3) - 4
A horizontal translation of h units is represented by f(x - h), and a vertical translation of k units is represented by f(x) + k. A translation 3 units to the left corresponds to h = -3, so the term becomes f(x - (-3)) = f(x + 3). A translation 4 units down corresponds to k = -4. Combining these gives the new function y = f(x + 3) - 4.
Question 9: ç¬¬äºæ¬¡äžç倧æŠåŸã®åœéçµæžäœå¶ãæ¯ãããã¬ãã³ã»ãŠããºäœå¶ã®äžã§èšç«ãããåœéæ©é¢ã«é¢ããèšè¿°ãšããŠãåœéé貚åºéïŒIMFïŒã®äž»ãªåœ¹å²ãæããã説æããŠãããã®ã¯ã©ããã
- èªç±ã§å€è§çãªè²¿æãä¿é²ãããããé¢çšã®åŒãäžãã貿æéå£ã®æ€å»ã«é¢ãã亀æžã®å ŽãæäŸããã
- éçºéäžåœã®é·æçãªéçºãããžã§ã¯ãïŒã€ã³ãã©æŽåãªã©ïŒã«å¯ŸããŠèè³ãè¡ãã
- å çåœãäžæçãªåœé忝ã®å±æ©ã«é¥ã£ãéã«ãçæçãªè³éãèè³ããã (Correct answer)
- å é²åœéã®çµæžæ¿çã«ã€ããŠåè°ããäžççµæžã®å®å®çæé·ãç®æãçµæžååæ©é¢ã§ããã
Correct answer: å çåœãäžæçãªåœé忝ã®å±æ©ã«é¥ã£ãéã«ãçæçãªè³éãèè³ããã
åœéé貚åºéïŒIMFïŒã®äž»ãªåœ¹å²ã¯ãçºæ¿çžå Žã®å®å®ãç®çãšããåœé忝ãèµ€åã«ãªããªã©äžæçãªéè屿©ã«é¥ã£ãå çåœã«å¯ŸããŠçæçãªè³éãèè³ããããšã§ããéžæè¢1ã¯äžçéè¡ïŒIBRDïŒã3ã¯GATTïŒåŸã®WTOïŒã4ã¯çµæžååéçºæ©æ§ïŒOECDïŒã®åœ¹å²ã«è¿ãã§ãã
Question 10: æ¥æ¬ã®åœäŒã¯äºé¢å¶ããšã£ãŠããŸãããã®äºã€ã®è°é¢ã®æ£ããçµã¿åããã¯ã©ããã
- äžé¢ãšäžé¢
- è¡è°é¢ãšåè°é¢ (Correct answer)
- åœæ°è°äŒãšå èé¢
- 貎æé¢ãšè¡è°é¢
Correct answer: è¡è°é¢ãšåè°é¢
æ¥æ¬ã®åœäŒã¯ãæ¥æ¬åœæ²æ³ç¬¬42æ¡ã«åºã¥ããè¡è°é¢ãšåè°é¢ã®äž¡è°é¢ã§æ§æãããäºé¢å¶ïŒäž¡é¢å¶ïŒãæ¡çšããŠããŸããã貎æé¢ãã¯æŠåã®åžåœè°äŒã®äžã€ã§ããã
Question 11: Japan's demographic challenge of population aging is most directly driven by:
- Government policies deliberately restricting family size since the 1970s
- High infant mortality rates that have reduced the youth population
- A total fertility rate that has remained far below the replacement level of about 2.1 (Correct answer)
- Rapid emigration of young working-age adults to other countries
Correct answer: A total fertility rate that has remained far below the replacement level of about 2.1
Japan's total fertility rate has been well below the replacement level of approximately 2.1 for decades, meaning fewer children are born than needed to sustain the population size.
Question 12: If f(x) = 2x + 3 and g(x) = x² - 1, what is f(g(2))?
- 13
- 9 (Correct answer)
- 11
- 7
Correct answer: 9
g(2) = 4 - 1 = 3. Then f(3) = 2(3) + 3 = 9.
Question 13: çç©ã®é²åã®èšŒæ ãšãããçžååšå®ã«é¢ããèšè¿°ãšããŠãæãé©åãªãã®ã¯ã©ããã
- ããã®è ãšã³ãŠã¢ãªã®ç¿Œã®ããã«ãèµ·æºã¯åãã ãçŸåšã®åœ¢ãæ©èœãç°ãªãåšå®ã (Correct answer)
- é³¥ã®ç¿Œãšæè«ã®ç¿ ã®ããã«ãèµ·æºã¯ç°ãªããåããããªæ©èœãæã€åšå®ã
- åãç°å¢ã«é©å¿ããçµæãç°ãªãçš®ã®çç©ã䌌ããããªåœ¢è³ªãæã€ããšã
- ããã®å°ŸãŠã骚ã®ããã«ãç¥å ã§ã¯æ©èœããŠãããçŸåšã§ã¯æ©èœã倱ã£ãŠããåšå®ã
Correct answer: ããã®è ãšã³ãŠã¢ãªã®ç¿Œã®ããã«ãèµ·æºã¯åãã ãçŸåšã®åœ¢ãæ©èœãç°ãªãåšå®ã
çžååšå®ãšã¯ãå ±éã®ç¥å ããé²åããçç©éã§ãåºæ¬çãªæ§é ãçºçã®èµ·æºãåãã§ããããçŸåšã®æ©èœã圢æ ãç°ãªã£ãŠããåšå®ã®ããšã§ãããããã®è ãã³ãŠã¢ãªã®ç¿Œãã¯ãžã©ã®ãã¬ãªã©ã¯ãéªšæ Œã®åºæ¬æ§é ãå ±éããŠããããã¹ãŠçžååšå®ã®äŸã§ããã
Question 14: A function f(x) = x² - 4x + 7. What is the minimum value of f(x)?
- 1
- 4
- 3 (Correct answer)
- 7
Correct answer: 3
Completing the square: f(x) = (x-2)² + 3. The minimum value is 3, occurring at x = 2.
Question 15: Which sentence correctly uses the ãŠ-form of a verb to connect two actions in Japanese?
- é£ã¹ããå¯ãŸãã
- é£ã¹ãŠãå¯ãŸãã (Correct answer)
- é£ã¹ããå¯ãŸãã
- é£ã¹ããå¯ãã
Correct answer: é£ã¹ãŠãå¯ãŸãã
The ãŠ-form (é£ã¹ãŠ) connects sequential actions, meaning 'I eat and then sleep.'
Question 16: Japan's overall trade pattern is best described as:
- Exporting raw materials and importing finished manufactured goods
- Maintaining a roughly balanced trade with equal values of exports and imports
- Exporting manufactured goods while importing raw materials and energy resources (Correct answer)
- Trading primarily with East Asian neighbors while deliberately avoiding Western markets
Correct answer: Exporting manufactured goods while importing raw materials and energy resources
Japan's trade structure involves importing raw materials (iron ore, coal, oil, food) and energy, then exporting high-value manufactured products such as vehicles, machinery, and electronics.
Question 17: What is the primary purpose of the äœæ (essay writing) section on the EJU Japanese test?
- To evaluate the ability to express opinions clearly in written Japanese (Correct answer)
- To test vocabulary memorization
- To measure reading speed
- To assess spoken Japanese fluency
Correct answer: To evaluate the ability to express opinions clearly in written Japanese
The äœæ section evaluates whether examinees can organize and express their opinions logically in written Japanese.
Question 18: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã è¿å¹Žãæ¥æ¬ã®éœåžéšã§ã¯ãäœæ°å士ã®äº€æµãç®çãšãããã³ãã¥ããã£ã¹ããŒã¹ããå¢ããŠããããã³ã·ã§ã³ã®å ±çšéšåããå°åã®ç©ºãå®¶ãæ¹è£ ããŠäœãããããšãå€ããããããã¹ããŒã¹ã§ã¯ãåã©ãããé«éœ¢è ãŸã§ãæ§ã ãªäžä»£ã®äººã ãéãŸããã€ãã³ããè¶£å³ã®æŽ»åãéããŠèªç¶ãªäº€æµãçãŸãããèæ¯ã«ã¯ãæ žå®¶æåãéœåžéšãžã®äººå£éäžã«ãããå°å瀟äŒã§ã®äººéé¢ä¿ãåžèã«ãªã£ãããšããããã³ãã¥ããã£ã¹ããŒã¹ã¯ãããããçŸä»£ç€ŸäŒã®åé¡ã«å¯Ÿããäžã€ã®è§£æ±ºçãšããŠæåŸ ãããŠããã ãã®æç« ã«ãããšãã³ãã¥ããã£ã¹ããŒã¹ãå¢ããŠããäž»ãªçç±ã¯äœã§ããã
- æ§ã ãªäžä»£ã®äœæ°éã®äº€æµãä¿ãããã (Correct answer)
- å°åã®ç©ºãå®¶åé¡ã解決ããããã
- å°æ¹èªæ²»äœãäŒè°ãéãå Žæã確ä¿ããããã
- åã©ããã¡ãå®å šã«éã¹ãå ŽæãæäŸããããã
Correct answer: æ§ã ãªäžä»£ã®äœæ°éã®äº€æµãä¿ãããã
The text explicitly states that community spaces are created for the purpose of interaction among residents ("äœæ°å士ã®äº€æµãç®çãšãã"). It also mentions that people of various generations gather there, and that these spaces are a solution to the problem of weakening relationships in the community. Therefore, promoting interaction among different generations of residents is the main reason.
Question 19: The Strait of Malacca is critically important to Japan's economy because:
- Most of Japan's oil imports from the Middle East pass through this narrow waterway (Correct answer)
- It is the main sea route connecting Japan directly to American export markets
- Japan's top trading partner, Malaysia, is located directly along this strait
- Japan's largest deep-sea fishing fleets concentrate in these strategic waters
Correct answer: Most of Japan's oil imports from the Middle East pass through this narrow waterway
The Strait of Malacca, between the Malay Peninsula and Sumatra, is the shortest sea route from Middle Eastern oil fields to Japan, making it a vital chokepoint for energy security.
Question 20: Find the coordinates of the vertex of the parabola defined by the quadratic function y = 2x² - 8x + 5.
- (-2, 29)
- (4, 5)
- (-8, 197)
- (2, -3) (Correct answer)
Correct answer: (2, -3)
The x-coordinate of the vertex of a parabola y = ax² + bx + c is given by the formula x = -b / 2a. For the function y = 2x² - 8x + 5, a = 2 and b = -8. Thus, x = -(-8) / (2 * 2) = 8 / 4 = 2. To find the y-coordinate, substitute x = 2 back into the equation: y = 2(2)² - 8(2) + 5 = 2(4) - 16 + 5 = 8 - 16 + 5 = -3. Therefore, the vertex is at (2, -3).
Question 21: Given that log 5 = 0.6990, evaluate log 5000.
- 2.6990
- 3.6990 (Correct answer)
- 4.6990
- 5.6990
Correct answer: 3.6990
Explanation: <br> The logarithm of a number represents the exponent to which a base must be raised to obtain that number. In this case, we are given that log 5 = 0.6990. To evaluate log 5000, we need to find the exponent to which the base 5 must be raised to obtain 5000. Since 5^4 = 625, and 5^5 = 3125, we can conclude that 5000 is between these two values. Therefore, the exponent must be between 4 and 5. Since the answer choices are in the form of 0.6990, we can deduce that the correct answer is 3.6990, as it falls between 3 and 4.
Question 22: Which particle correctly marks the indirect object (the recipient) in a Japanese sentence?
- ã
- ã« (Correct answer)
- ã
- ã§
Correct answer: ã«
The particle ã« marks the indirect object (recipient) in Japanese, as in åéã«ãã¬ãŒã³ããããã ('I gave a present to my friend').
Question 23: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã æ¥æ¬ã®ã³ã³ãããšã³ã¹ã¹ãã¢ã¯ããã¯ãåã«é£æåãæ¥çšåã売ãã ãã®åºã§ã¯ãªããå ¬å ±æéã®æ¯æããéè¡ã®ATMãå® é 䟿ã®çºéã»åãåããã³ã³ãµãŒããã±ããã®è³Œå ¥ãªã©ããã®æ©èœã¯å€å²ã«ãããã24æéå¶æ¥ãšããå©äŸ¿æ§ã«å ãããããã倿§ãªãµãŒãã¹ãæäŸããããšã§ãã³ã³ããã¯å°åäœæ°ã®çæŽ»ã«æ¬ ãããªã瀟äŒã€ã³ãã©ãšããŠã®äžé¢ãæã€ããã«ãªã£ããå€ãã®äººã«ãšã£ãŠãã³ã³ããã¯åãªããå°å£²åºããè¶ ããååšãšãªã£ãŠããã ãã®æç« ã«ãããšãæ¥æ¬ã®ã³ã³ãããšã³ã¹ã¹ãã¢ã¯ã©ã®ããã«å€åããŸãããã
- éœåžéšã§ã¯åºèæ°ãæžå°ããåŸåã«ããã
- ååã売ãã ãã§ãªãã倿§ãªãµãŒãã¹ãæäŸããããã«ãªã£ãã (Correct answer)
- å¶æ¥æéãççž®ããŠãšãã«ã®ãŒãç¯çŽããããã«ãªã£ãã
- ããæ°é®®ã§å¥åº·çãªé£åãå°éã«æ±ãããã«ãªã£ãã
Correct answer: ååã売ãã ãã§ãªãã倿§ãªãµãŒãã¹ãæäŸããããã«ãªã£ãã
The passage clearly states that convenience stores are no longer just places that sell goods ("åã«é£æåãæ¥çšåã売ãã ãã®åºã§ã¯ãªã"). It then lists numerous examples of other services they provide, such as utility payments, banking, and ticket purchasing, concluding that their functions are diverse ("ãã®æ©èœã¯å€å²ã«ããã"). This shows they have evolved to offer a wide range of services beyond retail.
Question 24: Japan's policy of protecting 'satochi satoyama' (éå°éå±±) landscapes refers to preserving:
- Industrial zones converted from former farmland for manufacturing use
- Urban renewal zones designated for sustainable city development
- Traditional rural mosaics of rice paddies, grasslands, and secondary forests (Correct answer)
- Coastal reclamation projects that expand agricultural land into the sea
Correct answer: Traditional rural mosaics of rice paddies, grasslands, and secondary forests
Satochi satoyama describes Japan's traditional rural landscape â a mosaic of rice paddies, managed forests, and grasslands â recognized for its biodiversity and cultural heritage.
Question 25: What does the expression ããŠããŸã convey in Japanese?
- Completion of an action, often with regret or an unintended result (Correct answer)
- A conditional statement
- An ongoing action
- A polite request
Correct answer: Completion of an action, often with regret or an unintended result
ããŠããŸã indicates that an action is fully completed, often carrying a nuance of regret or an unintended consequence.
Question 26: ååçç©åŠã®äžå¿åçã§ããã»ã³ãã©ã«ãã°ãã«é¢ããèšè¿°ãšããŠãæãé©åãªãã®ã¯ã©ããã
- éºäŒæ å ±ã¯ãDNAããRNAãçµãŠã¿ã³ãã¯è³ªãžãšäžæ¹åã«æµããã (Correct answer)
- éºäŒæ å ±ã¯ãã¿ã³ãã¯è³ªããRNAãçµãŠDNAãžãšäžæ¹åã«æµããã
- éºäŒæ å ±ã¯ãRNAããDNAãçµãŠã¿ã³ãã¯è³ªãžãšäžæ¹åã«æµããã
- éºäŒæ å ±ã¯ãDNAãRNAãã¿ã³ãã¯è³ªã®éãåæ¹åã«æµããã
Correct answer: éºäŒæ å ±ã¯ãDNAããRNAãçµãŠã¿ã³ãã¯è³ªãžãšäžæ¹åã«æµããã
ã»ã³ãã©ã«ãã°ãã¯ãéºäŒæ å ±ããDNA â RNA â ã¿ã³ãã¯è³ªããšããäžæ¹åã®æµãã§äŒéããããšãããååçç©åŠã®åºæ¬ååã§ãããDNAã®æ å ±ãRNAã«åãåãããéçšãã転åããRNAã®æ å ±ã«åºã¥ããŠã¿ã³ãã¯è³ªãåæãããéçšãã翻蚳ããšããã
Question 27: Approximately what percentage of Japan's total land area is used for agriculture?
- About 5%
- About 30%
- About 12% (Correct answer)
- About 50%
Correct answer: About 12%
Only about 12% of Japan's land is cultivable, due to the dominance of steep mountain terrain, making intensive and efficient farming methods essential.
Question 28: Which of the following correctly describes the Doppler effect?
- Waves slow down in denser media
- The observed frequency of a wave changes when the source or observer is moving (Correct answer)
- Waves bounce off surfaces
- Waves bend around obstacles
Correct answer: The observed frequency of a wave changes when the source or observer is moving
The Doppler effect is the change in observed frequency due to relative motion between the wave source and the observer.
Question 29: On the EJU Japanese test, what is the approximate recommended length for the äœæ essay?
- 200â300 characters
- 800â1000 characters (Correct answer)
- 400â500 characters
- 50â100 characters
Correct answer: 800â1000 characters
The EJU äœæ section typically requires essays of approximately 800 to 1000 Japanese characters to adequately demonstrate writing ability.
Question 30: Find the missing number in the sequence: 3, 6, 9, __, 15.
- 12 (Correct answer)
- 11
- 10
- 13
Correct answer: 12
Explanation: <br> The missing number in the sequence is 12. The given sequence follows a pattern of adding 3 to each number. Starting with 3, we add 3 to get 6, then add 3 again to get 9. Following the same pattern, we add 3 to 9 to get 12, and then add 3 again to get 15. Therefore, the missing number is 12.
Question 31: ã¡ã³ãã«ã®éºäŒã®æ³åã«é¢ããå®éšã§ãäžžãçš®åïŒé¡æ§ïŒã®çŽç³»ãšããã®ããçš®åïŒæœæ§ïŒã®çŽç³»ã亀é ããŠF1ïŒåäžä»£ïŒãåŸããæ¬¡ã«ããã®F1ãèªå®¶å粟ãããŠF2ïŒå«äžä»£ïŒãåŸããF2ã«ãããäžžãçš®åãšããã®ããçš®åã®è¡šçŸåã®å颿¯ãšããŠãæãé©åãªãã®ã¯ã©ããã
- äžžïŒãã = 3ïŒ1 (Correct answer)
- äžžïŒãã = 1ïŒ3
- äžžïŒãã = 1ïŒ1
- äžžïŒãã = 2ïŒ1
Correct answer: äžžïŒãã = 3ïŒ1
顿§ã®æ³åã«ãããF1äžä»£ã¯ãã¹ãŠäžžãçš®åïŒéºäŒååã¯ãããæ¥åïŒãšãªããåé¢ã®æ³åã«ããã°ãF1ãäœãé å¶åã¯é¡æ§éºäŒåãšæœæ§éºäŒåã1:1ã®æ¯ã§æã€ãF1ã®èªå®¶å粟ã«ãããF2äžä»£ã§ã¯éºäŒååã1:2:1ïŒé¡æ§ãã¢ïŒãããïŒæœæ§ãã¢ïŒã®æ¯ã§çããããã®çµæã衚çŸåã¯äžžãçš®åïŒé¡æ§ïŒãšããã®ããçš®åïŒæœæ§ïŒã3:1ã®æ¯ã§çŸããã
Question 32: In the EJU physics context, what phenomenon occurs when two waves overlap and their displacements add together?
- Refraction
- Polarization
- Diffraction
- Superposition (Correct answer)
Correct answer: Superposition
The principle of superposition states that when two waves meet, the resulting displacement is the sum of the individual displacements.
Question 33: ææ²»ç¶æ°æã«å®æœãããè¿ä»£åæ¿çã«é¢ããèšè¿°ãšããŠãæ£ãããªããã®ã¯æ¬¡ã®ãã¡ã©ããã
- ããªã¹ãæã®çŠæã匷åããéåœæ¿çãåå°å ¥ã (Correct answer)
- åœæ°çå µãååãšããåŸŽå µä»€ã®å¶å®ã
- è©ã廿¢ããŠçã眮ãå»è©çœ®çã®æè¡ã
- å€§æ¥æ¬åžåœæ²æ³ãçºåžããåžåœè°äŒãéèšã
Correct answer: ããªã¹ãæã®çŠæã匷åããéåœæ¿çãåå°å ¥ã
ææ²»ç¶æ°ã¯ãæ¥æ¬ã®éåœãšæ¥éãªè¥¿æ¬§åãç¹åŸŽãšããæä»£ã§ãããéåœæ¿çã¯ãããã«å ç«ã€åŸ³å·å¹åºã®ä»£è¡šçãªæ¿çã§ãããããªãŒæç£ã®æ¥èªããã£ããã«çµãããè¿ããŸãããããã¯ææ²»ç¶æ°ãåŒãèµ·ãããéèŠãªåºæ¥äºã§ããä»ã®éžæè¢ã¯ãã¹ãŠãææ²»æä»£ã®äžå¿çãªæ¹é©ã§ãã
Question 34: A capacitor stores energy in the form of:
- Kinetic energy of electrons
- An electric field between its plates (Correct answer)
- A magnetic field
- Chemical potential energy
Correct answer: An electric field between its plates
A capacitor stores energy as an electric field established between its charged plates.
Question 35: 次ã®å çŽ ã®ãã¡ã第äžã€ãªã³åãšãã«ã®ãŒãæã倧ãããã®ã¯ã©ããã
- ããªãŠã (He) (Correct answer)
- ã«ãªãŠã (K)
- ãªããŠã (Li)
- ãããªãŠã (Na)
Correct answer: ããªãŠã (He)
第äžã€ãªã³åãšãã«ã®ãŒã¯ãååããé»åã1ååãå»ãã®ã«å¿ èŠãªãšãã«ã®ãŒã§ããåšæè¡šã«ãããŠã第äžã€ãªã³åãšãã«ã®ãŒã¯äžè¬ã«åšæã®å³ã«è¡ãã»ã©ããŸãæã®äžã«è¡ãã»ã©å€§ãããªãåŸåããããŸããããªãŠã (He)ã¯åšæè¡šã®æãå³äžã«äœçœ®ããåžã¬ã¹å çŽ ã§ãããéåžžã«å®å®ããé»åé 眮ãæã€ãããé»åãåãå»ãã®ã極ããŠå°é£ã§ãããããã£ãŠããªã¹ããããå çŽ ã®äžã§ç¬¬äžã€ãªã³åãšãã«ã®ãŒãæã倧ãããªããŸãã
Question 36: VSEPRçè«ïŒåå䟡殻é»å察åçºåïŒã«åºã¥ããšãã¡ã¿ã³ïŒCHâïŒååã®ç«äœæ§é ã¯äœãã
- å¹³é¢äžè§åœ¢
- çŽç·åœ¢
- äžè§é圢
- æ£åé¢äœåœ¢ (Correct answer)
Correct answer: æ£åé¢äœåœ¢
ã¡ã¿ã³ïŒCHâïŒååã§ã¯ãäžå¿ã®ççŽ ååã4ã€ã®æ°ŽçŽ ååãšåçµåã圢æããŠããŸããããã«ãããççŽ ååã®åšãã«ã¯4察ã®å ±æé»å察ãååšããŸããVSEPRçè«ã«ãããšããããã®é»å察ã¯äºãã«åçºãã空éçã«æãé¢ããäœçœ®ã«é 眮ãããŸãã4ã€ã®é»å察ãæãé¢ããããšãã§ããé çœ®ã¯æ£åé¢äœæ§é ã§ãããçµåè§ã¯çŽ109.5床ã«ãªããŸãã
Question 37: The Tokyo Metropolitan Area (Greater Tokyo) is notable globally for being:
- The world's most populous metropolitan area with over 37 million people (Correct answer)
- Japan's fastest-growing urban area in terms of population since 2000
- A city spanning portions of three different Japanese islands
- The oldest continuously inhabited major city in East Asia
Correct answer: The world's most populous metropolitan area with over 37 million people
Greater Tokyo consistently ranks as the world's most populous metropolitan area, housing over 37 million people in its urban agglomeration.
Question 38: Which of the following best explains the high frequency of earthquakes and volcanic eruptions in the Asia-Pacific region, including Japan?
- Multiple major tectonic plates converge around the Pacific Ocean basin, creating the Ring of Fire (Correct answer)
- Strong ocean currents in the Pacific generate enormous pressure on the ocean floor
- The region's dense population increases cumulative stress on the Earth's crust over time
- The region contains an unusually high concentration of radioactive minerals that heat the crust
Correct answer: Multiple major tectonic plates converge around the Pacific Ocean basin, creating the Ring of Fire
The Pacific Ring of Fire is defined by the convergence of multiple tectonic plates â including the Pacific, Philippine, Eurasian, and North American plates â producing intense seismic and volcanic activity.
Question 39: There are 6 students. In how many ways can a president, vice-president, and treasurer be chosen from this group, assuming no student can hold more than one office?
- 216
- 20
- 18
- 120 (Correct answer)
Correct answer: 120
This is a permutation problem because the order of selection matters (president, vice-president, and treasurer are distinct positions). The number of ways to arrange 3 students from a group of 6 is calculated as âPâ = 6! / (6-3)! = 6 * 5 * 4 = 120.
Question 40: What does Faraday's Law of electromagnetic induction state?
- An EMF is induced in a conductor when the magnetic flux through it changes (Correct answer)
- Electric field lines point from negative to positive charge
- Like charges repel and unlike charges attract
- A current creates a magnetic field around the conductor
Correct answer: An EMF is induced in a conductor when the magnetic flux through it changes
Faraday's Law states that the induced EMF in a circuit is proportional to the rate of change of magnetic flux through the circuit.
Question 41: A 4 kg cart moving at 5 m/s collides with a 6 kg cart that is initially at rest. The two carts stick together after the collision. What is their common velocity after the collision?
- 2 m/s (Correct answer)
- 3 m/s
- 2.5 m/s
- 5 m/s
Correct answer: 2 m/s
In a perfectly inelastic collision where objects stick together, total momentum is conserved. The total momentum before the collision equals the total momentum after. The formula is mâvâáµ¢ + mâvâáµ¢ = (mâ + mâ)v_f. Before the collision: p_initial = (4 kg)(5 m/s) + (6 kg)(0 m/s) = 20 kg·m/s. After the collision: p_final = (4 kg + 6 kg)v_f = (10 kg)v_f. Setting p_initial = p_final: 20 kg·m/s = (10 kg)v_f. Solving for v_f gives v_f = 20 / 10 = 2 m/s.
Question 42: æ¥é²æŠäºïŒ1904-1905ïŒã«ãããæ¥æ¬ã®åå©ããåœé瀟äŒã«äžããæã倧ããªåœ±é¿ã¯äœãã
- æ¥æ¬ãç²åŸãããã¹ãŠã®é åãäžåœã«è¿éãã平忡çŽãç· çµããã
- ã¢ã¡ãªã«åè¡åœããšãŒãããã®æ€æ°å°äž»çŸ©ã«å¯Ÿæãããããæ¥æ¬ãšæ£åŒãªè»äºåçãç· çµãããã£ãããšãªã£ãã
- ãã·ã¢åžåœã®å³æåŽ©å£ãšãœããšãé£éŠã®æç«ãæããã
- ã¢ãžã¢ã®è¿ä»£åœå®¶ãåããŠãšãŒãããã®å匷ã«åå©ããããšã§ãä»ã®ã¢ãžã¢è«žåœã®æ°æäž»çŸ©éåãéŒèããã (Correct answer)
Correct answer: ã¢ãžã¢ã®è¿ä»£åœå®¶ãåããŠãšãŒãããã®å匷ã«åå©ããããšã§ãä»ã®ã¢ãžã¢è«žåœã®æ°æäž»çŸ©éåãéŒèããã
æ¥æ¬ã®åå©ã¯ããšãŒãããã®è»äºçãªç¡æµç¥è©±ãæã¡ç Žãç»æçãªåºæ¥äºã§ããããã®åå©ã¯ãã¢ãžã¢ãä»ã®æ€æ°å°åãããå°åå šäœã®æ°æäž»çŸ©éåã«åŒ·åãªç²Ÿç¥çåŸæŒããšã¢ãã«ãæäŸããéãšãŒãããåœå®¶ã§ãè¿ä»£åã«æåãã西欧ååŒ·ã«ææŠã§ããããšã瀺ããŸããã
Question 43: 以äžã®ååç©ã®ãã¡ãäž»ã«ã€ãªã³çµåã«ãã£ãŠåœ¢æãããŠãããã®ã¯ã©ããã
- å¡©åã«ãªãŠã (KCl) (Correct answer)
- æ°Ž (HâO)
- äºé žåççŽ (COâ)
- ã¡ã¿ã³ (CHâ)
Correct answer: å¡©åã«ãªãŠã (KCl)
ã€ãªã³çµåã¯ãäž»ã«éå±å çŽ ãšééå±å çŽ ã®éã§åœ¢æãããŸãããã®çµåã§ã¯ãéå±ååãé»åã倱ã£ãŠéœã€ãªã³ã«ãªããééå±ååãé»åãåãåã£ãŠé°ã€ãªã³ã«ãªããŸãããã®éœã€ãªã³ãšé°ã€ãªã³ã®éã®é黿°çãªåŒåã«ãã£ãŠçµåã圢æãããŸããéžæè¢ã®äžã§ãå¡©åã«ãªãŠã (KCl)ã¯éå±ã§ããã«ãªãŠã (K)ãšééå±ã§ããå¡©çŽ (Cl)ããæ§æãããŠãããããã€ãªã³çµåæ§ã®ååç©ã§ããä»ã®éžæè¢ã¯ãã¹ãŠééå±å çŽ å士ã®å ±æçµåã«ãã£ãŠåœ¢æãããŠããŸãã
Question 44: Japan's population distribution is best described as:
- Heavily concentrated in coastal lowlands, plains, and river valleys (Correct answer)
- Evenly spread across all four main islands
- Mostly located in the northern island of Hokkaido
- Concentrated mainly in mountainous interior regions
Correct answer: Heavily concentrated in coastal lowlands, plains, and river valleys
Because mountains cover about 73% of Japan's land area, the population is crowded into coastal lowlands and plains, creating some of the world's highest urban densities.
Question 45: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã ãã¬ã¯ãŒã¯ã¯ãé倿éããªããªãããšã§åŸæ¥å¡ã®èªç±ãªæéãå¢ããã¯ãŒã¯ã©ã€ããã©ã³ã¹ã®åäžã«ç¹ãããšããå©ç¹ãããããŸããäŒæ¥ã«ãšã£ãŠãããªãã£ã¹ã®å ç±è²»ã亀éè²»ã®æ¯çµŠãåæžã§ããã¡ãªããã¯å€§ãããããããäžæ¹ã§èª²é¡ãååšããããã®äžã€ããã³ãã¥ãã±ãŒã·ã§ã³ã®è³ªã®å€åã ããªãã£ã¹ã«ããã°å¯èœã ã£ããååãšã®äœæ°ãªãäŒè©±ãéè«ããçãŸããã¢ã€ãã¢ãããŒã ã®äžäœæãããã¬ã¯ãŒã¯ã§ã¯å€±ããããããæå³çãªã³ãã¥ãã±ãŒã·ã§ã³ã®æ©äŒãèšãã工倫ãå¿ èŠãšãªãã ãã®æç« ã§ææãããŠããããã¬ã¯ãŒã¯ã®åé¡ç¹ã¯æ¬¡ã®ãã¡ã©ãã§ããã
- äŒç€Ÿã®éèŠãªããŒã¿ãžã®ã¢ã¯ã»ã¹ãé£ãããªãããšã
- ããåºããªãã£ã¹ã¹ããŒã¹ãå¿ èŠã«ãªãããšã
- ååãšã®å¶çºçãªã³ãã¥ãã±ãŒã·ã§ã³ãæžãããšã (Correct answer)
- åŸæ¥å¡ã®éå€è²»çšãå¢å ããããšã
Correct answer: ååãšã®å¶çºçãªã³ãã¥ãã±ãŒã·ã§ã³ãæžãããšã
The passage explicitly states that a problem ('課é¡') with telework is the change in communication quality. It specifies that the casual conversations and chats with colleagues that happen in an office, which can lead to ideas and team unity, are easily lost ("ååãšã®äœæ°ãªãäŒè©±ãéè«ããçãŸããã¢ã€ãã¢ãããŒã ã®äžäœæãããã¬ã¯ãŒã¯ã§ã¯å€±ããããã"). This directly corresponds to the idea of a reduction in spontaneous communication.
Question 46: A binomial experiment has n = 5 trials with probability of success p = 0.4 per trial. What is the probability of exactly 2 successes?
- 0.3456 (Correct answer)
- 0.6480
- 0.1728
- 0.2304
Correct answer: 0.3456
P(X=2) = C(5,2)(0.4)²(0.6)³ = 10 à 0.16 à 0.216 = 10 à 0.03456 = 0.3456.
Question 47: ïŒé³å£°ïŒ ç·ã®äººãšå¥³ã®äººãã¢ã«ãã€ãã«ã€ããŠè©±ããŠããŸãã 女ïŒå èŒ©ãæ°ããã¢ã«ãã€ãæ¢ããŠããã§ããã ç·ïŒãããä»ãã£ãŠãã³ã³ããã®ãã€ããæçµŠã¯ãããã ãã©ãå€ã®ã·ãããå€ããŠãæè¿ã¡ãã£ãšãã€ããŠãã 女ïŒãããªãã§ãããããããæŒéã®ä»äºãããã§ããã ç·ïŒããã倧åŠããè¿ããšããã§ãäœãããã®ãªãããªã£ãŠæã£ãŠãææ¥ã®åéã«åãããšäžçªãããã ãã©ã 女ïŒãããªãã倧åŠã®åã®ã«ãã§ã¯ã©ãã§ãããæè¿ãåéã®è²ŒãçŽãåºãŠãŸãããã倧åŠããããã ããæŒéã ãåããã£ãŠæžããŠãããŸããã ç·ïŒãžããæ¬åœïŒããã¯ããããææ¥ãæ©éèŠãŠã¿ããã ïŒè³ªåïŒ ç·ã®äººãæ°ããã¢ã«ãã€ãã«æ±ããæ¡ä»¶ã¯äœã§ããã
- ã³ã³ãããšã³ã¹ã¹ãã¢ã§ã®ä»äºã§ããããšã
- 倧åŠã®è¿ãã§ãæŒéã«åããããšã (Correct answer)
- å€ã®æé垯ã«åããããšã
- æçµŠãé«ãããšã
Correct answer: 倧åŠã®è¿ãã§ãæŒéã«åããããšã
ç·ã®äººã¯çŸåšã®ã¢ã«ãã€ãããå€ã®ã·ãããå€ããŠãã€ãããšèšããæ°ããã¢ã«ãã€ãã®æ¡ä»¶ãšããŠã倧åŠããè¿ããšãããã§ãææ¥ã®åéã«åãããã€ãŸãæŒéã«åããããšãæãã§ããŸãããã®äž¡æ¹ã®æ¡ä»¶ãæºãããŠããã®ããã®éžæè¢ã§ãã
Question 48: If logâ(x) = 3 and logâ(y) = 5, what is logâ(x²y)?
- 8
- 11 (Correct answer)
- 13
- 16
Correct answer: 11
logâ(x²y) = 2·logâ(x) + logâ(y) = 2(3) + 5 = 6 + 5 = 11.
Question 49: Which of the following correctly uses the passive form (å身圢) in Japanese?
- å çãè€ããã
- å çãè€ããããã
- å çã«è€ããããã (Correct answer)
- å çã«è€ããã
Correct answer: å çã«è€ããããã
å çã«è€ãããã means 'I was praised by the teacher,' correctly using the passive form with ã« for the agent.
Question 50: Which of the following best describes the use of ããšæã in formal Japanese writing?
- Expressing the writer's opinion or judgment in a softened manner (Correct answer)
- Expressing strong certainty
- Quoting another person's exact speech
- Describing a physical action
Correct answer: Expressing the writer's opinion or judgment in a softened manner
ããšæã is commonly used in essays to express the writer's personal opinion or conclusion in a polite, less assertive tone.
Question 51: Differentiate y = ln(7x+2)
- Dy/dx= 7(7x+2)
- Dy/dx= 7x+2
- Dy/dx = 7 /(7x+2) (Correct answer)
- Dy/dx= 2/(7x+2)
Correct answer: Dy/dx = 7 /(7x+2)
Explanation: <br> The correct answer is dy/dx = 7 /(7x+2). This is the correct differentiation of the given function y= ln(7x+2). The derivative of ln(u) with respect to x is du/dx divided by u. In this case, u = 7x+2, so du/dx = 7. Therefore, the derivative of ln(7x+2) with respect to x is 7/(7x+2).
Question 52: ïŒé³å£°ïŒ é§ ã®ã¢ããŠã³ã¹ãæµããŠããŸãã ããŸããªããäžçªç·ã«ã15æ30åçºãç¹å¥æ¥è¡ããããå·ã暪æµè¡ããå°çããŸãããã®é»è»ã¯ã6䞡線æã§ãåã®2äž¡ã1å·è»ãš2å·è»ãæå®åžãåŸãã®4äž¡ã3å·è»ãã6å·è»ãèªç±åžã§ããæå®åžããå©çšã®ã客æ§ã¯ããææã¡ã®å笊ã®å·è»çªå·ãã確ããã®äžããåŸ ã¡ãã ããããªãããã®é»è»ã¯ãéäžã®å·åŽé§ ã«ã¯æ¢ãŸããŸããã®ã§ããæ³šæãã ãããã ïŒè³ªåïŒ ãã®é»è»ã«ã€ããŠãæ£ãããã®ã¯ã©ãã§ããã
- ãã®é»è»ã¯å·åŽé§ ã«åè»ããã
- èªç±åžã¯1å·è»ãš2å·è»ã§ããã
- ãã®é»è»ã¯å šéšã§4䞡線æã§ããã
- æå®åžã¯åã®è»äž¡ã«ããã (Correct answer)
Correct answer: æå®åžã¯åã®è»äž¡ã«ããã
ã¢ããŠã³ã¹ã§ã¯ããåã®2äž¡ã1å·è»ãš2å·è»ãæå®åžããšæç¢ºã«èª¬æããŠããŸãããããã£ãŠããæå®åžã¯åã®è»äž¡ã«ããããšãããã®éžæè¢ãå 容ãšäžèŽããŠããŸããä»ã®éžæè¢ã¯ããå·åŽé§ ã«ã¯æ¢ãŸããŸããããã3å·è»ãã6å·è»ãèªç±åžããã6䞡線æããšããã¢ããŠã³ã¹ã®å 容ãšççŸããŸãã
Question 53: 次ã®ç©è³ªã®ãã¡ãååéã«æ°ŽçŽ çµåã圢æããã®ã¯ã©ããã
- ã¡ã¿ã³ (CHâ)
- ããåæ°ŽçŽ (HF) (Correct answer)
- å¡©åæ°ŽçŽ (HCl)
- ç¡«åæ°ŽçŽ (HâS)
Correct answer: ããåæ°ŽçŽ (HF)
æ°ŽçŽ çµåã¯ã黿°é°æ§åºŠã®éåžžã«å€§ããååïŒããçŽ Fãé žçŽ OãçªçŽ NïŒã«çŽæ¥çµåããæ°ŽçŽ ååããè¿ãã«ããå¥ã®ååã®FãOãNååãšã®éã«çãã匷ãååéåã§ããéžæè¢ã®äžã§ãããåæ°ŽçŽ ïŒHFïŒã¯æ°ŽçŽ ååã黿°é°æ§åºŠã®æã倧ããããçŽ ååã«çµåããŠãããããååéã§åŒ·ãæ°ŽçŽ çµåã圢æããŸããããã«ãããHFã¯ååéãè¿ãä»ã®ããã²ã³åæ°ŽçŽ ïŒHClãªã©ïŒã«æ¯ã¹ãŠç°åžžã«é«ã沞ç¹ãæã¡ãŸãã
Question 54: ååçªå·17ã®å¡©çŽ ïŒClïŒååã®åºåºç¶æ ã«ãããé»åé 眮ãšããŠãæãé©åãªãã®ã¯ã©ããã
- K(2)L(8)M(8)
- K(2)L(8)M(7) (Correct answer)
- K(2)L(8)M(6)
- K(2)L(7)M(8)
Correct answer: K(2)L(8)M(7)
å¡©çŽ ã®ååçªå·ã¯17ã§ãããããã¯ååæ žã«17åã®éœåãšãäžæ§ååã«17åã®é»åãããããšãæå³ããŸããé»åã¯ãšãã«ã®ãŒæºäœã®äœãé»åæ®»ããé ã«æºããããŠãããŸããKæ®»ã«ã¯æå€§2åãLæ®»ã«ã¯æå€§8åã®é»åãå容ãããŸãããããã£ãŠãæåã®2ã€ã®æ®»ã«åèš10åã®é»åãå ¥ã£ãåŸãæ®ãã®7åã®é»åãMæ®»ã«å ¥ããŸãããã£ãŠãå¡©çŽ ã®é»åé 眮ã¯K(2)L(8)M(7)ãšãªããŸãã
Question 55: What is the relationship between wave frequency (f), wavelength (λ), and wave speed (v)?
- v = λ / f
- v = fλ (Correct answer)
- v = f + λ
- v = f / λ
Correct answer: v = fλ
The wave equation v = fλ states that wave speed equals frequency multiplied by wavelength.
Question 56: Find the magnitude of the vector <2, -3>.
- 13
- â-4
- â13 (Correct answer)
- â11
Correct answer: â13
Explanation: <br> The magnitude of a vector is calculated by taking the square root of the sum of the squares of its components. In this case, the vector has a magnitude of â(2^2 + (-3)^2) = â(4 + 9) = â13. Therefore, the correct answer is â13.
Question 57: æ¥æ¬ã®èªåè»ã¡ãŒã«ãŒãç±³åœã«èªåè»ã1äžãã«ã§èŒžåºãã代éããã«ã§åãåã£ãããã®ååŒã¯ãæ¥æ¬ã®åœéåæ¯çµ±èšã«ãããŠã©ã®ããã«èšé²ããããã
- éè忝ã®è³ç£ã®æžå°ãšããŠèšäžãããã
- çµåžžåæ¯ã®äžã®ã貿æåæ¯ãã®é»åïŒè²žæ¹ïŒãšããŠèšäžãããã (Correct answer)
- çµåžžåæ¯ã®äžã®ãç¬¬äžæ¬¡æåŸåæ¯ãã®é»åïŒè²žæ¹ïŒãšããŠèšäžãããã
- è³æ¬ç§»è»¢ç忝ã®èµ€åïŒåæ¹ïŒãšããŠèšäžãããã
Correct answer: çµåžžåæ¯ã®äžã®ã貿æåæ¯ãã®é»åïŒè²žæ¹ïŒãšããŠèšäžãããã
åœéåæ¯çµ±èšã«ãããŠã財ïŒã¢ãïŒã®èŒžåºã¯ãçµåžžåæ¯ããæ§æããã貿æã»ãµãŒãã¹åæ¯ãã®äžã®ã貿æåæ¯ãã«åé¡ãããŸãã茞åºã¯æµ·å€ãã代éãåãåãååŒã§ãããããæ¥æ¬ã®è³ç£ãå¢å ããèŠå ãšãªããé»åïŒè²žæ¹é ç®ã»ãã©ã¹ïŒãšããŠèšäžãããŸãã
Question 58: è¡è°é¢ã§å é£äžä¿¡ä»»æ±ºè°æ¡ã坿±ºãããå Žåãå é£ããšãã¹ã察å¿ãšããŠãæ²æ³äžå®ããããŠãããã®ã¯æ¬¡ã®ãã¡ã©ããã
- æé«è£å€æã«æ±ºè°ã®ç¡å¹ã蚎ããªããã°ãªããªãã
- åœæ°æç¥šã宿œããŠãå é£ã®ä¿¡ä»»ãåããªããã°ãªããªãã
- 10æ¥ä»¥å ã«è¡è°é¢ãè§£æ£ããããç·èŸè·ããªããã°ãªããªãã (Correct answer)
- çŽã¡ã«åè°é¢ã®ä¿¡ä»»ãåããªããã°ãªããªãã
Correct answer: 10æ¥ä»¥å ã«è¡è°é¢ãè§£æ£ããããç·èŸè·ããªããã°ãªããªãã
æ¥æ¬åœæ²æ³ç¬¬69æ¡ã¯ãè¡è°é¢ã§äžä¿¡ä»»ã®æ±ºè°æ¡ã坿±ºãããšããå é£ã¯10æ¥ä»¥å ã«è¡è°é¢ãè§£æ£ããªãéããç·èŸè·ããªããã°ãªããªããšå®ããŠããŸããããã¯è°é¢å é£å¶ã®éèŠãªååã§ãã
Question 59: æ¥æ¬ã®åœäŒã«ããããè¡è°é¢ã®åªè¶ãã«é¢ããèšè¿°ãšããŠãæ£ãããªããã®ã¯ã©ããã
- äºç®ã¯ãå ã«è¡è°é¢ã«æåºãããªããã°ãªããªãã
- æ¡çŽã®æ¿èªã«ã€ããŠãäž¡è°é¢ã®è°æ±ºãç°ãªã£ãå Žåãè¡è°é¢ã®è°æ±ºãåœäŒã®è°æ±ºãšãªãã
- æ³åŸæ¡ãè¡è°é¢ã§å¯æ±ºåŸãåè°é¢ã§åŠæ±ºãããå Žåããã®æ³åŸæ¡ã¯çŽã¡ã«å»æ¡ãšãªãã (Correct answer)
- å é£ç·ç倧è£ã®æåã¯ãè¡è°é¢ã®è°æ±ºãåªå ãããã
Correct answer: æ³åŸæ¡ãè¡è°é¢ã§å¯æ±ºåŸãåè°é¢ã§åŠæ±ºãããå Žåããã®æ³åŸæ¡ã¯çŽã¡ã«å»æ¡ãšãªãã
æ³åŸæ¡ãåè°é¢ã§åŠæ±ºãããŠããè¡è°é¢ãåºåžè°å¡ã®3åã®2以äžã®å€æ°ã§åã³å¯æ±ºããã°ããã®æ³åŸæ¡ã¯æ³åŸãšãªããŸãïŒæ²æ³ç¬¬59æ¡ïŒããããã£ãŠãçŽã¡ã«å»æ¡ãšãªãããã§ã¯ãããŸããããããè¡è°é¢ã®åªè¶ãèªããããŠããç¹ã®äžã€ã§ãã
Question 60: The probability that event A occurs is 0.4 and the probability that event B occurs is 0.3. If A and B are independent, what is P(A ⪠B)?
- 0.70
- 0.50
- 0.58 (Correct answer)
- 0.12
Correct answer: 0.58
P(A ⪠B) = P(A) + P(B) - P(A ⩠B) = 0.4 + 0.3 - (0.4)(0.3) = 0.7 - 0.12 = 0.58.
Question 61: Japan's heavy dependence on energy imports is primarily caused by:
- Japan's constitution banning the domestic generation of nuclear power
- International law prohibiting Japan from extracting its offshore resources
- Japan's extremely limited domestic fossil fuel reserves relative to its energy demand (Correct answer)
- The global market making energy imports consistently cheaper than domestic production
Correct answer: Japan's extremely limited domestic fossil fuel reserves relative to its energy demand
Japan has very limited domestic coal, oil, and natural gas reserves, forcing it to import the vast majority of its energy to power industry and meet consumer needs.
Question 62: AåœãšBåœããããããåŽåè 1人ããã1æ¥ã«çç£ã§ããç±³ãšèªåè»ã®éã以äžã®è¡šã®éãã§ãããšãããããŽã£ããã»ãªã«ãŒãã®æ¯èŒçç£è²»èª¬ã«åºã¥ããå Žåãã©ã®ãããªåæ¥ã»è²¿æãè¡ãããã®ãæãåççãã | | ç±³ | èªåè» | |:---:|:---:|:---:| | Aåœ | 10åäœ | 2å° | | Båœ | 8åäœ | 4å° |
- Aåœãäž¡æ¹ã®çç£ã«ç¹åããBåœã«èŒžåºããã
- Aåœãèªåè»ãBåœãç±³ãçç£ããŠè²¿æããã
- äž¡åœãšãã«äž¡æ¹ãçç£ãã貿æã¯è¡ããªãã
- Aåœãç±³ãBåœãèªåè»ãçç£ããŠè²¿æããã (Correct answer)
Correct answer: Aåœãç±³ãBåœãèªåè»ãçç£ããŠè²¿æããã
æ¯èŒçç£è²»èª¬ã§ã¯ãå財ãçç£ããããã®æ©äŒè²»çšãããå°ããåœããã®è²¡ã®çç£ã«æ¯èŒåªäœãæã€ãšèããŸããAåœãèªåè»1å°ãçç£ããæ©äŒè²»çšã¯ç±³5åäœïŒ10/2ïŒã§ããBåœãèªåè»1å°ãçç£ããæ©äŒè²»çšã¯ç±³2åäœïŒ8/4ïŒã§ãããããã£ãŠãBåœã¯èªåè»ã®çç£ã«æ¯èŒåªäœããããŸããäžæ¹ãAåœãç±³1åäœãçç£ããæ©äŒè²»çšã¯èªåè»0.2å°ïŒ2/10ïŒã§ããBåœãç±³1åäœãçç£ããæ©äŒè²»çšã¯èªåè»0.5å°ïŒ4/8ïŒã§ãããããã£ãŠãAåœã¯ç±³ã®çç£ã«æ¯èŒåªäœããããŸãããã£ãŠãAåœãç±³ãBåœãèªåè»ã«ç¹åããŠçç£ãã貿æããããšãåæ¹ã«ãšã£ãŠåççã§ãã
Question 63: If v =â©a,bâª, then a is the ___________ component of v.
- Vertical
- Parallel
- Horizontal (Correct answer)
- Slope
Correct answer: Horizontal
Explanation: <br> If v = â©a,bâª, then a is the horizontal component of v. This is because, in a two-dimensional Cartesian coordinate system, the x-axis represents the horizontal direction. The vector v = â©a,b⪠represents a displacement in the x-axis (horizontal direction) of units and in the y-axis (vertical direction) of b units. Therefore, a represents the displacement in the horizontal direction, making it the horizontal component of v.
Question 64: A quadratic equation x² - 5x + 6 = 0 has roots α and β. What is the value of α² + β²?
- 7
- 11
- 13 (Correct answer)
- 25
Correct answer: 13
By Vieta's formulas, α + β = 5 and αβ = 6. So α² + β² = (α + β)² - 2αβ = 25 - 12 = 13.
Question 65: Ohm's Law states that the current through a conductor is:
- Directly proportional to the voltage and inversely proportional to the resistance (Correct answer)
- Independent of voltage
- Equal to the product of voltage and resistance
- Directly proportional to resistance and inversely proportional to voltage
Correct answer: Directly proportional to the voltage and inversely proportional to the resistance
Ohm's Law: I = V/R, meaning current equals voltage divided by resistance.
Question 66: ããçç©ã®ç¹å®ã®åœ¢è³ªã決å®ããéºäŒåã®çµã¿åãããäœãšåŒã¶ãã
- 衚çŸå
- 察ç«éºäŒå
- ã²ãã
- éºäŒåå (Correct answer)
Correct answer: éºäŒåå
éºäŒååïŒgenotypeïŒã¯ãçç©ãæã€ç¹å®ã®åœ¢è³ªã«é¢ããéºäŒåã®æ§æãã€ãŸã察ç«éºäŒåã®çµã¿åãããæããäžæ¹ã衚çŸåïŒphenotypeïŒã¯ããã®éºäŒååãšç°å¢èŠå ã«ãã£ãŠå®éã«çŸããå€èŠäžã®ç¹åŸŽãæ§è³ªã®ããšã§ããã
Question 67: In a DC circuit, what happens to the total current when an additional resistor is added in parallel?
- Total current remains unchanged
- Total current increases because the equivalent resistance decreases (Correct answer)
- Total current becomes zero
- Total current decreases because more resistance is added
Correct answer: Total current increases because the equivalent resistance decreases
Adding a parallel branch lowers total resistance, so by I = V/R, total current from the source increases.
Question 68: ã€ã®ãªã¹ã®ç£æ¥é©åœæã«ãå·¥æ¥å°åž¯ã®ãªãªã·ã¢ããªãšãã·ã£ã¯ïŒèŸïŒã«ãããŠãæè²ã®åäœã®å²åãå¢å ããçŸè±¡ãæããã説æããé²åã®ã¡ã«ããºã ã¯äœãã
- çªç¶å€ç°
- èªç¶éžæ (Correct answer)
- 人çºéžæ
- éºäŒçæµ®å
Correct answer: èªç¶éžæ
ãã®çŸè±¡ã¯ãå·¥æ¥æåããšããŠç¥ãããèªç¶éžæã®å žåçãªäŸã§ãããç£æ¥é©åœã«ããå·¥å Žã®ç €ã§æšã®å¹¹ãé»ããªã£ããããæããè²ã®èŸã¯é³¥ã«æé£ããããããªããæè²ã®èŸãçãæ®ãããããªã£ãããã®çµæãçåãšç¹æ®ã«æå©ãªæè²ã®åœ¢è³ªãæã€åäœãå¢å ãããããã¯ç°å¢ãžã®é©å¿ãèªç¶éžæã«ãã£ãŠåŒãèµ·ããããããšã瀺ããŠããã
Question 69: 以äžã®æç« ãèªãã§ãåŸã®åãã«çããªããã ç°äžããã¯ãæ¥é±ã«è¿«ã£ãå šåœåŠäŒã§ã®çºè¡šãåã«ãèœã¡çããªãæ¥ã ãéãããŠããããã®æ¥ã®ããã«ã圌ã¯äœã¶æãç ç©¶ãç¶ããŠããã倧ããªèå°ã§èªåã®ç ç©¶ææãçºè¡šã§ããããšã«ãèžãé«é³Žããããªè奮ãæããäžæ¹ã§ã倧å¢ã®å°éå®¶ã®åã§è©±ãããšãèãããšãå¿èãçž®ããããªç·åŒµãèŠããŠãããä»å€ãã圌ã¯äžäººç ç©¶å®€ã«æ®ããã¹ã©ã€ããäœåºŠãèŠè¿ããªãããçºè¡šã®ç·Žç¿ãç¹°ãè¿ããŠããã åŠäŒã®çºè¡šãåã«ããŠãç°äžããã¯ä»ã©ã®ãããªæ°æã¡ã§ããã
- äžå®ãšæåŸ ãå ¥ãæ··ãã£ãæ°æã¡ã§ããã (Correct answer)
- å šãèå³ããªããäœã®æºåãããŠããªãã
- çºè¡šããªããã°ãªããªãããšã«å¯ŸããŠæã£ãŠããã
- å®å šã«èªä¿¡ãæã£ãŠããŠããªã©ãã¯ã¹ããŠããã
Correct answer: äžå®ãšæåŸ ãå ¥ãæ··ãã£ãæ°æã¡ã§ããã
The text describes Tanaka's conflicting emotions. He feels excitement ("èžãé«é³Žããããªè奮ãæãã") about presenting his research, but also nervousness ("å¿èãçž®ããããªç·åŒµãèŠããŠãã") about speaking in front of experts. This combination of feelings is best described as a mix of anxiety and anticipation/excitement.
Question 70: What is the unit of frequency in the SI system?
- Joule (J)
- Newton (N)
- Pascal (Pa)
- Hertz (Hz) (Correct answer)
Correct answer: Hertz (Hz)
Frequency is measured in Hertz (Hz), where 1 Hz equals one cycle per second.
Question 71: Japan became a major industrial power despite limited natural resources primarily through:
- Importing raw materials and energy, adding value through skilled manufacturing, and exporting finished goods (Correct answer)
- Developing unique renewable energy technologies before other industrialized nations
- Discovering large offshore oil reserves in the 1950s that funded rapid industrialization
- Exploiting colonial territories across Asia to supply raw materials through the mid-20th century
Correct answer: Importing raw materials and energy, adding value through skilled manufacturing, and exporting finished goods
Japan's economic model centers on importing raw materials (iron ore, coal, petroleum) and energy, processing them with skilled labor and advanced technology, and exporting high-value manufactured products.
Question 72: ïŒé³å£°ïŒ å çãææ¥ã§è©±ããŠããŸãã ãã¿ãªãããæ¥é±ã®ãã¬ãŒã³ããŒã·ã§ã³ã®æºåã¯é²ãã§ããŸãããããŒãã¯èªç±ã§ãããããã€ã泚æç¹ããããŸãããŸããæéã¯äžäºº5åå³å®ã§ããé·ãããŠãçãããŠãæžç¹å¯Ÿè±¡ãšãªããŸããæ¬¡ã«ãçºè¡šã®éã«ã¯ãå¿ ãäžã€ä»¥äžã®ã°ã©ããåçãªã©ã®èŠèŠè³æã䜿ã£ãŠãã ããã話ãã ãã§ã¯ãèããŠãã人ã«å 容ãäŒããã«ããããã§ããæåŸã«ãçºè¡šåŸã«ã¯è³ªçå¿çã®æéãèšããŸãã®ã§ãä»ã®äººã®çºè¡šããã£ããèããŠã質åãèããŠãããŠãã ãããã ïŒè³ªåïŒ å çã話ããæ³šæç¹ãšããŠãæ£ãããªããã®ã¯ã©ãã§ããã
- ä»ã®äººã®çºè¡šãèãå¿ èŠã¯ãªãã (Correct answer)
- çºè¡šã«ã¯åçãã°ã©ããå¿ ãå«ããªããã°ãªããªãã
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- çºè¡šæéã¯5åã¡ããã©ã§ãªããã°ãªããªãã
Correct answer: ä»ã®äººã®çºè¡šãèãå¿ èŠã¯ãªãã
å çã¯æåŸã«ãä»ã®äººã®çºè¡šããã£ããèããŠã質åãèããŠãããŠãã ããããšè¿°ã¹ãŠããŸããããã¯ãä»ã®äººã®çºè¡šãèãããšãå¿ èŠã§ãããšããæå³ãªã®ã§ããä»ã®äººã®çºè¡šãèãå¿ èŠã¯ãªãããšããéžæè¢ã¯ãå çã®æç€ºãšå察ã®å 容ã§ãããæ£ãããããŸããã
Question 73: A simple pendulum with a 0.5 kg bob is released from rest at a height 'h' above its lowest point. If its speed at the lowest point is 2 m/s, what is the initial height 'h'? (Assume g = 10 m/s² and neglect air resistance).
- 0.1 m
- 0.5 m
- 0.2 m (Correct answer)
- 0.4 m
Correct answer: 0.2 m
This problem uses the principle of conservation of mechanical energy. The potential energy (PE) at the highest point is completely converted into kinetic energy (KE) at the lowest point. So, PE_initial = KE_final. The formula for potential energy is PE = mgh, and for kinetic energy is KE = œmv². Setting them equal: mgh = œmv². The mass 'm' cancels out, leaving gh = œv². Solving for h: h = v² / (2g). Plugging in the values: h = (2 m/s)² / (2 à 10 m/s²) = 4 / 20 = 0.2 m.
Question 74: ïŒé³å£°ïŒ ã©ãžãªã®å€©æ°äºå ±ã§ãã ã颿±å°æ¹ã®é±æ«ã®å€©æ°ããäŒãããŸããåææ¥ã¯ãååäžã¯ããæŽããŸãããååŸã«ãªããšé²ãåºããããããªãã§ãããã倿¹ããã¯æã«ãããã«ããéšãé·éšã«æ³šæãå¿ èŠã§ãããåºããã®éã¯ãæãç³ã¿åããããšå®å¿ã§ããæ¥ææ¥ã¯ãæãããã£ãããšæŽããŠã絶奜ã®è¡æ¥œæ¥åãšãªãããã§ããæ°æž©ãåææ¥ããäžãããå€ã®ãããªæãã«ãªãã§ããããã ïŒè³ªåïŒ ãã®å€©æ°äºå ±ã«ãããšãæ£ãããã®ã¯ã©ãã§ããã
- æ¥ææ¥ã¯åææ¥ããæ¶Œãããªãã
- åææ¥ã«å€åºãããªãåããã£ãã»ããããã (Correct answer)
- åææ¥ã®ååŸã¯æŽå€©ãç¶ãã
- 鱿«ã¯äž¡æ¥ãšãéšãéãå¯èœæ§ãããã
Correct answer: åææ¥ã«å€åºãããªãåããã£ãã»ããããã
ã¢ããŠã³ãµãŒã¯åææ¥ã®å€©æ°ã«ã€ããŠãã倿¹ããã¯æã«ãããã«ããéšãé·éšã«æ³šæãå¿ èŠããšèšããããåºããã®éã¯ãæãç³ã¿åããããšå®å¿ã§ãããšä»ãå ããŠããŸãããããã£ãŠãåææ¥ã«åãæã£ãŠããããšãæšå¥šããŠãããã®éžæè¢ãæ£ããã§ãã
Question 75: What is electric power (P) in terms of voltage (V) and current (I)?
- P = V + I
- P = V/I
- P = I/V
- P = VI (Correct answer)
Correct answer: P = VI
Electric power is calculated as P = VI, the product of voltage and current.
Question 76: The graph of the quadratic function y = ax² + bx + c opens downwards and has two distinct x-intercepts. Which of the following must be true?
- a > 0 and b² - 4ac > 0
- a < 0 and b² - 4ac > 0 (Correct answer)
- a < 0 and b² - 4ac < 0
- a > 0 and b² - 4ac < 0
Correct answer: a < 0 and b² - 4ac > 0
For a quadratic function y = ax² + bx + c, the graph opens downwards if the leading coefficient 'a' is negative (a < 0). The number of x-intercepts is determined by the discriminant, Π= b² - 4ac. For two distinct x-intercepts, the discriminant must be positive (b² - 4ac > 0). Therefore, both a < 0 and b² - 4ac > 0 must be true.
Question 77: Japan's position on the Pacific Ring of Fire means the country frequently experiences:
- Hurricanes and severe monsoon flooding
- Blizzards and polar vortex events
- Tornadoes and large-scale dust storms
- Earthquakes and volcanic eruptions (Correct answer)
Correct answer: Earthquakes and volcanic eruptions
The Ring of Fire is a zone of intense seismic and volcanic activity where multiple tectonic plates converge; Japan sits at the junction of the Pacific, Philippine, Eurasian, and North American plates.
Question 78: æ¥æ¬åœæ²æ³ã«ããã倩çã®å°äœã«é¢ããèšè¿°ãšããŠãæãé©åãªãã®ã¯ã©ããã
- åœã®å éŠã§ãããè¡æ¿æš©ãçµ±æ¬ããã
- åœäŒã®æåã«åºã¥ããŠãæ³åŸãå¶å®ããã
- å é£ã®å©èšãšæ¿èªãªãã«ãæ¿æ²»çæš©èœãè¡äœ¿ããã
- åœæ°çµ±åã®è±¡åŸŽã§ãããåœäºè¡çºã®ã¿ãè¡ãã (Correct answer)
Correct answer: åœæ°çµ±åã®è±¡åŸŽã§ãããåœäºè¡çºã®ã¿ãè¡ãã
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Question 79: In formal Japanese essay writing, which ending style is expected on the EJU?
- ãã§ã / ããŸã (polite style)
- ãã ã / ãã (casual style)
- ãã / ãã§ãã (plain/formal style) (Correct answer)
- ãã / ããã (conversational style)
Correct answer: ãã / ãã§ãã (plain/formal style)
EJU essays require the ãã / ãã§ãã style, which is standard for academic and formal writing in Japanese.
Question 80: Let U = {x | x is an integer, 1 †x †10} be the universal set. Let A = {1, 2, 3, 4} and B = {2, 4, 6, 8}. Which of the following represents the set (A ⪠B)á¶, the complement of the union of A and B?
- {1, 3, 5, 6, 7, 8, 9, 10}
- {1, 3, 6, 8}
- {2, 4}
- {5, 7, 9, 10} (Correct answer)
Correct answer: {5, 7, 9, 10}
First, find the union of A and B: A ⪠B = {1, 2, 3, 4, 6, 8}. The complement of this set, (A ⪠B)á¶, consists of all elements in the universal set U that are not in A ⪠B. The elements in U are {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Removing the elements of A ⪠B leaves {5, 7, 9, 10}.
Examination for Japanese University Admission (EJU)
The EJU assesses international students' academic abilities for admission to Japanese universities, covering Japanese language, science, mathematics, and Japan and the World (social studies).
Exam Rules
- You can skip questions and return to them later
- Flag questions for review before submitting
- No feedback shown until you submit the entire exam
- Unanswered questions count as wrong â answer everything
- 10 pretest questions are mixed in and don't affect your score
- Timer auto-submits when time runs out
- Your progress is auto-saved every 30 seconds