An ideal gas is expanding such that PT2=constant. The coefficient of volumetric expansion of the gas is
A
1T
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B
2T
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C
3T
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D
4T
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Solution
The correct option is C3T From ideal gas equation PV=nRT⇒P=nRTV
Given PT2=KnRTV.T2=KnRT3=KV……(i) Differentiating both sides, we get 3nRT2dT=KdV……(ii) Dividing equation (ii) by (i) we get 3TdT=dVV Coefficient of volume expansion =dVVdT=3T