A sonometer wire 
long is in unison with a tuning fork of frequency ' 
'. If the length of the wire is decreased by 
and it is vibrated with the same tuning fork, 6 beats are heard per second. The value of ' 
' is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Given, 
, beats 
By equation (i) and (ii), 
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