Four curves `A, B, C` and `D` are drawn in Fig. for a given amount of gas. The curves which represent adiabatic and isothermal changes

Options

A. C and D respectively
B. D and C respectively
C. A and B respectively
D. B and A respectively

Answer

C

Explanation

`[(dp)/(dV)]_(ISO) = - p/V`
` [(dp)/(dV)]_("Adia") = - gamma P/V`

Both the slopes are negative and `("slope")_("Adia") gt (slope)_("iso")` so curve A is for adiabatic and curve B is for isothermal.