Sound of wavelength 
passes through a Quincke's tube, which is adjusted to give a maximum intensity 
. Through what distance should the sliding tube be moved to give an intensity 
?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let 
amplitude due to each wave.
Let 
phase difference to obtain the intensity 
.
Amplitude 
.
or 
or 
or 
, where 
path difference.
, where 
displacement of the sliding tube.
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