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16 tuning forks are arranged in increasi...

16 tuning forks are arranged in increasing order of frequency. Any two consecutive tuning forks when sounded together produce 8 beats per second. If the frequency of last tuning fork is twice that of first, the frequency of first tuning fork is :-

A

`60`

B

`80`

C

`100`

D

`120`

Text Solution

Verified by Experts

The correct Answer is:
D
`2f = f xx 15 xx 8 rArr f = 120 Hz`.
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