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Question

Assertion :Every vibrating body is a source of sound Reason: All sounds are audible

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is C Assertion is correct but Reason is incorrect
We know that the sound is produced by the vibration of particles in a medium. Thus, source of sound is vibration.
All sounds are not audible by the human ear. The audible range of the human ear is 20Hz to 20kHz. Thus, the sound of below 20Hz and above 20kHz is not audible for human ear.
Thus, assertion is correct but reason is incorrect.

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