1.

A certain amount of a diatomic gas undergoes a certain polytropic process in which it absorbs 100 "Jouk" heat and performs 25 "Joule" work. The process can be described by the formula :

Answer»

`PV^(5)=C`
`PV^(1//5)=C`
`PV^(-1//5)=C`
`PV^(-2//5)=C`

SOLUTION :`DeltaQ=n((R )/(gamma-1)+(R )/(1-x))DELTAT`
`DeltaW=n((R )/(1-x))DeltaT`
`(DeltaQ)/(DeltaW)=((1-x)/(gamma-1)+1)=(100)/(25)=4`
`rArr x=1-3(gamma-1)`
`=1-3((2)/(5))=-(1)/(5)`


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