IB Physics Flashcards
7 cards from real IB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 IB Physics flashcards as text
What type of wave is sound classified as in IB Physics?
Answer: Longitudinal
Sound is a longitudinal wave in which particle displacement is parallel to the direction of wave propagation, creating compressions and rarefactions.
Which equation correctly relates frequency (f) and period (T)?
Answer: f = 1/T
Frequency and period are reciprocals: f = 1/T, meaning a wave with a 2-second period has a frequency of 0.5 Hz.
What is the speed of light in a vacuum, as listed in the IB Physics data booklet?
Answer: 3.0 × 10⁸ m/s
The speed of light in a vacuum is c = 3.0 × 10⁸ m/s, a fundamental constant used throughout IB Physics.
What does Ohm's Law state about the relationship between voltage (V), current (I), and resistance (R)?
Answer: V = IR
Ohm's Law states V = IR, meaning the voltage across a conductor equals the current through it multiplied by its resistance.
What is the SI unit of electrical resistance?
Answer: Ohm
The ohm (Ω) is the SI unit of electrical resistance, defined as the resistance when one volt produces one ampere of current.
Which of Kirchhoff's laws states that the total current entering a junction equals the total current leaving it?
Answer: Kirchhoff's Current Law
Kirchhoff's Current Law (KCL) states that the algebraic sum of currents at a junction is zero, reflecting conservation of charge.
When light passes from air into glass, which wave property changes?
Answer: Speed and wavelength
When light enters a denser medium, its speed and wavelength both decrease while its frequency remains constant, causing refraction.
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