A Level Physics Practice Exam

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Study for the A Level Physics Exam. Our quiz features flashcards and multiple choice questions, each with hints and explanations. Prepare thoroughly!

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Which term describes the frequency of a wave if it completes 4 oscillations in 2 seconds?

2 Hz
4 Hz
8 Hz
16 Hz

The correct answer is: 2 Hz

To determine the frequency of a wave, you need to consider how many oscillations (or cycles) occur in a given time period. Frequency is defined as the number of oscillations per second and is measured in hertz (Hz). In this case, the wave completes 4 oscillations in 2 seconds. To find the frequency, you divide the number of oscillations by the time it takes for those oscillations to occur: Frequency = Number of Oscillations / Time (in seconds) Plugging in the given values: Frequency = 4 oscillations / 2 seconds = 2 Hz This indicates that the wave oscillates twice every second. Therefore, the correct term describing the frequency of this wave is indeed 2 Hz.