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Combined Science — Physics Flashcards

6 cards from real O-LEVEL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Combined Science — Physics flashcards as text

  1. What is the relationship between pressure and depth in a liquid?

    Answer: Pressure increases with depth

    Pressure in a liquid increases with depth because the weight of liquid above increases. P = ρgh.

  2. Which type of electromagnetic radiation has the longest wavelength?

    Answer: Radio waves

    Radio waves have the longest wavelength in the electromagnetic spectrum, ranging from 1 mm to over 100 km.

  3. A pendulum completes 20 oscillations in 10 seconds. What is its frequency?

    Answer: 2 Hz

    Frequency = number of oscillations ÷ time = 20 ÷ 10 = 2 Hz.

  4. What is the unit of electrical resistance?

    Answer: Ohm

    The unit of electrical resistance is the Ohm (Ω), defined by Ohm's Law: V = IR.

  5. Which mirror produces a virtual, upright, and diminished image?

    Answer: Convex mirror

    A convex mirror always produces a virtual, upright, and diminished (smaller) image, regardless of object position.

  6. What is the acceleration due to gravity on Earth?

    Answer: 9.8 m/s²

    The acceleration due to gravity on Earth is approximately 9.8 m/s² (often approximated as 10 m/s² in calculations).

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