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Question

Number of cycles of compression and rarefaction produced in a medium per second is called ___.

A
amplitude
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B
velocity
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C
frequency
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D
wavelength
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Solution

The correct option is C frequency
Sound travels in the form of waves of compressions and rarefactions. These are formed due to the vibration of source. A set of compression and rarefaction forms a cycle of the wave. The number of such cycles per second is called frequency of the wave.

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