Concept:Frequency measures how often an event repeats. Terminology slightly differs based on whether we measure strictly cycles (Hz) or rotational phase (radians).
Solution:- Note: Strictly speaking, "revolutions per second" defines standard rotational/linear frequency (\( f \), measured in Hz). Angular frequency (\( \omega \)) is technically radians per second (\( \omega = 2\pi f \)).
- However, in many historical exam contexts, rotational "revolutions" are loosely grouped under the broader umbrella of Angular frequency to distinguish it from linear back-and-forth oscillations, or it is treated as a synonym for rotational speed (\( ext{rpm/rps} \)). Based on the official exam key, Option B is considered the targeted answer.
Why other options are incorrect:Time period is seconds per revolution. Amplitude is a spatial distance. Linear frequency is heavily debated here, but the official historical key selects B.
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