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A sonometer string and a tuning fork when sounded together give 6 beats/sec, whether the length of sonometer string is 95 cm or 100 cm. The frequency of tuning fork in Hz is

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256

262

234

260

answer is D.

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Detailed Solution

The frequency in two cases should differ by 12. Further n x /= constant

IF N is the frequency of the tuning fork then n₁l₁=n₂l₂

_{(N+6)95 =(N-6)100}

_{N =234 HZ}

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