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A student holds a tuning fork oscillatin...

A student holds a tuning fork oscillating at 170 Hz. He walks towards a wall at a constant speed of 2 `ms^(-1)` The beat fequency observed by the student between the tuning fork and its echo is (Velocity of sound =342 `ms ^(-1)` )

A

2.5 Hz

B

3 Hz

C

1 Hz

D

2 Hz

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The correct Answer is:
A
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TARGET PUBLICATION-WAVE MOTION -MCQ 7.1
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