COMEDK Exam 2013 Solved Paper

For adiabatic process,
pVγ= constant
For an ideal gas, pV=nRT‌or‌p=

nRT

V

⇒

nRT

V

Vγ= constant
⇒TVγ−1= constant
Again, from ideal gas equation,
V=

nRT

p

⇒p(

nRT

p

)γ= constant
⇒p1−γTγ= constant
Hence, relation shown in option (d) is not for adiabatic process.