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If two tuning fork A and B are sounded t...

If two tuning fork A and B are sounded together they produce 4 beats per second. A is then slightly loaded with wax, they produce 2 beats when sounded again. The frequency of A is 256. The frequency of B will be

A

250

B

262

C

252

D

260

Text Solution

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The correct Answer is:
C

Two possible frequencies of B are `256 pm 4=260 or 252` When A is loaded its frequency reduces from 256 to 248 say which would produce `4 beats//sec` only if freq. of B is 252.
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