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Assertion: Newton’s equation for speed of sound in air was found wrong because he assumed process as isothermal
Reason: Propagation of sound wave in medium is very fast. So pressure and volume changes adiabatically in medium

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Assertion is false, and Reason is correct

Assertion and Reason both are true Reason is not a correct explanation for Assertion

Assertion is correct, and Reason is false

Assertion and Reason both are true Reason is the correct explanation for Assertion

answer is C.

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