Cₚ and Cᵥ are specific heats at constant pressure and constant volume respectively. It is observed that Cₚ - Cᵥ = a for hydrogen gas Cₚ - Cᵥ = b for nitrogen gas The correct relation between a and b is :
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Question

Cₚ and Cᵥ are specific heats at constant pressure and constant volume respectively. It is observed that Cₚ - Cᵥ = a for hydrogen gas Cₚ - Cᵥ = b for nitrogen gas The correct relation between a and b is :

Options

G1 Physics · Accepted Answer

For specific heats expressed per unit mass, Cₚ−Cᵥ=R/M. For hydrogen M=2 and for nitrogen M=28, so a/b=(R/2)/(R/28)=14. Hence a=14b. Option A.

Cₚ and Cᵥ are specific heats at constant pressure and constant volume respectively. It is observed that Cₚ − Cᵥ = a for hydrogen gas Cₚ − Cᵥ = b for nitrogen gas The correct relation between a and b is :