Change in velocity of sound in a gas per degree rise in temperature at 27oC is ‘x’. Then change in velocity of sound per degree rise in temperature in the same gas at 127oC will be
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a
x/3
b
2x/3
c
3x2
d
3 x
answer is C.
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Detailed Solution
Velocity of sound V=δRTMdVdT=12δRMT⇒dVdT∝1T∴ x1x=TT1=273+27273+127=32⇒x1=3x2