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When source of sound moves towards a sta...

When source of sound moves towards a stationary observer, the wavelength of sound received by him

A

decreases while frequency increases

B

remains the same, whereas frequency increase

C

increase and frequency also increases

D

decreases while frequency remains the same

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The correct Answer is:
A
When source of sound moving towards to stationary observer.
Apparent frequency `(n_(a))=n[(v)/(v-v_(s))]`
Hence, the wavelength of sound received by him decreases while frequency increases.
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