A pipe closed at one end has length 
. At its open end a 
long uniform string is vibrating in its second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire in 
and the speed of sound is 
, the mass of the string used is
Text Solution
Verified by ExpertsThe correct answer is:
C
Let, length of string, 
Length of pipe, 
As the frequency of string is vibrating in second harmonics i.e.,
( 
mass pen unit length of string)
Fundamental frequency of closed pipe is, 
. Here ' 
' is speed of sound.
At resonance, 
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