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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Kinetic Theory of Gases
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In a given gas sample of Hydrogen, one fifth of the heat supplied is used to raise the internal energy of the gas. Finding the molar specific heat of the gas gives?

$(A) 7.5R $ $(B) 6.5R $ $(C) 4.5R$ $(D) 5.5R$
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Heat supplied $ = n CdT$, where $C$ is the molar specific heat.
$\Rightarrow \large\frac{nCdT}{3} = \large\frac{f}{2}$$nRdT$
$\Rightarrow C = \large\frac{3fR}{2} $$= \large\frac{15R}{2}$$ = 7.5R$
answered Jan 22, 2014 by balaji.thirumalai

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