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Question

A tuning fork of frequency 380 Hz is moving towards a wall with a velocity of 4 m/s. Then the number of beats heard by a stationary listener between direct and reflected sounds will be (velocity of sound in air is 340 m/s)

A
\N
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B
5
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C
7
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D
10
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Solution

The correct option is A \N
The frequency of direct and reflected sound is same.

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