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Question

The frequency of a sound wave is 100 Hz. What is the number of oscillations produced in 5 seconds?

A

20
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B

500
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C

50
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D

200
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Solution

The correct option is B
500
The number of oscillations per second is called the frequency of oscillation. A frequency of 100 Hz is 100 oscillations per second.
So, in 5 seconds the number of oscillations will be
5×100 = 500 oscillations.

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