+91-9566306857  (or)  +91-9176170648

Ask Questions, Get Answers

Home  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Kinetic Theory of Gases

A gas is heated at constant pressure . The fraction of heat supplied used for external work expressed in terms of the adiabatic index is

1 Answer

Answer: $\large\frac{\gamma -1}{\gamma}$
For an isobaric process, $Q = nC_P \Delta T$ and $W = nR \Delta T$
$\Rightarrow \large\frac{\Delta W}{\Delta Q}$$ = \large\frac{R}{C_P}$
Now, $C_P = \large\frac{\gamma R}{ \gamma -1}$ for an isobaric process, where $\gamma$ is the adiabatic index or the heat capacity ratio.
$\Rightarrow \large\frac{\Delta W}{\Delta Q}$$ = \large\frac{R}{C_P}$$ =\large\frac{\gamma -1}{\gamma}$
answered Mar 27, 2014 by yamini.v
edited Aug 9, 2014 by balaji.thirumalai

Related questions

Ask Question
Download clay6 mobile app