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Physics Wave and Sound Stationary Waves MCQ (Single Correct)

The source of sound s is moving with a velocity 50 m/s towards a stationary observer. The observer measures the frequency of the source as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the observer after crossing him ? The velocity of sound in the medium is 350 m/s

A
750 Hz
B
857 Hz
C
1143 Hz
D
1333 Hz

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Verified by Experts
The correct answer is:
A

Here,
When the source is moving towards the observer,

When the source is moving away from the observer,

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