Wire having tension 
produces six beats per second when it is tuned with a fork. When tension changes to 
, it is tuned with the same fork, the number of beats remain unchanged. The frequency of the fork will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
By law of tension, 
Let the frequency of tuning fork be n
In both cases, number of beats per second is six and 
and 
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