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A column of air at 51^(@) C and a tuning...

A column of air at `51^(@) C` and a tuning fork produce `4` beats per second when sounded together. As the temperature of the air column is decreased, the number of beats per second tends to decrease and when the temperature is `16^(@) C` the two produce `1` beat per second. Find the frequency of the tuning fork.

A

100 Hz

B

75 Hz

C

150 Hz

D

50 Hz

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The correct Answer is:
D
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