If for hydrogen `C_(P) - C_(V) = m` and for nitrogen `C_(P) - C_(V) = n`, where `C_(P)` and `C_(V)` refer to specific heats per unit mass respectively at constant pressure and constant volume, the relation between `m` and `n` is (molecular weight of hydrogen = 2 and molecular weight or nitrogen = 14)

Options

A. `n=14m`
B. `n=7m`
C. `m=7n`
D. `m=14n`

Answer

D

Explanation

`C_(P)-C_(V)=mM("for", H_(2)),C_(P)-C_(V)=nM("for" , N_(2))`