Question

An adiabatic Bulk modulus of an ideal gas at Pressure P is 

(A) γP 

(B) (p / γ) 

(C) P 

(D) (p / 2)

Answer 1

Correct option: (A) γP

Explanation:

For adiabatic process, (dP / dV) = – γ(P/V)………..(1)

Bulk modulus = – [dP / (dV / V)] = [– (dP / dV) × V]

Hence from (1), bulk modulus = + γ (P/V) × V = γP