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A tuning fork produces 4 beats per secon...

A tuning fork produces 4 beats per second with another tuning fork of frequency 256 Hz. The first one is now loaded with a little wax and the beat frequency is found to increase to 6 per second. What was the original frequency of the tuning fork ?

Text Solution

Verified by Experts

The correct Answer is:
B
Frequency of first will decrease by loading wax
over it. Beat frequency is increasing. Hence,
`f_(2) gt f_(1)`
or `f_(2) - f_(1) = 4`
`:. f_(1) = f_(2) - 4 = 256 - 4`
`= 252 H_(Z)`
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Knowledge Check

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    B
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    B
    320 Hz
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    D
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    A
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    B
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