A cylindrical tube open at both the ends has a fundamental frequency of 
in air. If 
of the tube is immersed vertically in water the fundamental frequency of air column is
A
B
C
D
.
Text Solution
Verified by ExpertsThe correct answer is:
A
(i)
(ii)
A cylindrical tube open at both the ends, its fundamental frequency is
where 
is the velocity of sound in air.
If a 
of cylindrical tube is immersed in a water, it will become a closed pipe of length three fourth that of an open pipe as shown in figure (ii). Therefore, its fundamental frequency is
(using eq. (i))
.
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