question_answer

During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio, \[{{C}_{p}}/{{C}_{V}}\] for the gas is                                                                             [AIEEE 2003]

A)  4/3

B)                   2    

C)  5/3      

D)       3/2

Correct Answer: D

Solution :

[d] Given,

In an adiabatic process

constant

... (ii)

Comparing Eqs. (i) and (ii), we get