A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 
two successive resonances are produced at 20 cm and 73 cm ofcolumn length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 
is
A
330 
B
339 
C
350 
D
300 
Text Solution
Verified by ExpertsThe correct answer is:
B
The velocity of sound in air at 
is
; where 
frequency of tuning fork and 
are the successive column length.
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