A) 250 Hz
B) 252 Hz
C) 260 Hz
D) 262 Hz
Correct Answer: B
Solution :
Given, \[{{n}_{A}}=256Hz\] \[\therefore \] Possible frequencies of tuning fork \[B=256\pm 4\] \[=260\] or \[252Hz.\] On loading wax on tuning fork A, its frequency will decrease. Now, 2 beats/s are obtained. This is possible only when \[{{n}_{B}}=252Hz.\]You need to login to perform this action.
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