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String Fixed at Both Ends

Three tuning ...

Question

Three tuning fork of frequency 400 Hz, 401 Hz and 402 Hz are sounded simultaneously.the number of beats heard per second are :

A

1

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B

2

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C

3

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D

none of these

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Solution

The correct option is D 1
2 Hz and 1 Hz are sounded together giving 1 beats/s.

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