A set of four tuning forks can produce beat frequencies of 1,3,5,7 and 8Hz when two of them are vibrated together. If lowest frequency among them is 550Hz then other frequencies are
A
251,254,258
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B
351,356,358
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C
555,557,558
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D
453,455,458
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Solution
The correct option is C555,557,558 We have as per the question νmax−550=8⇒νmax=558, then νmax−ν=1⇒ν=557Hz Similarly, ν−ν′=2⇒ν′=555Hz Hence, other frequencies are 555Hz,557Hz,558Hz