Two tuning forks P and Q are vibrated together. The number of beats produced are represented by the straight line OA in the following graph. After loading Q with wax again these are vibrated together and the beats produced are represented by the line OB. If the frequency of P is 341Hz, the frequency of Q will be
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a
341 Hz
b
338 Hz
c
344 Hz
d
None of the above
answer is C.
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Detailed Solution
nQ=341±3=344Hz or 338Hz on waxing Q, the number of beats decreases hence nQ=344Hz