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A tuning fork A gives 4 beats per sec wi...

A tuning fork A gives 4 beats per sec with a tuning fork B of frequency 120 Hz . When B is filed slightly beats disappear . Frequency of A Is

A

116 Hz.

B

124 Hz.

C

122 Hz.

D

118 Hz.

Text Solution

Verified by Experts

The correct Answer is:
B
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