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A gas is confined inside a container having a movable piston. The gas is allowed to expand  isobarically. If the initial volume of gas is V0 and the speed of sound in the gas is C0, then the speed of sound when the volume of the gas increases to 4V0 is 

a
C0
b
2C0
c
4C0
d
C0/2

detailed solution

Correct option is B

C=γRTMFor isobaric process,V1T1=V2T2HenceV0T1=4V0T2⇒T2=4T1FromC1C2=T1T2⇒C0C2=T04T0⇒C2=2C0

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