Question

The ratio of two specific heats of gas $C _ { p } / C _ { v }$ for argon is1.6 and for hydrogen is 1.4. Adiabatic elasticity of argon at pressure P is E. Adiabatic elasticity of hydrogen will also be equal to E at the pressure

• A. P
• B. $\frac { 8 } { 7 } P$
• C. $\frac { 7 } { 8 } P$
• D. 1.4 P

Answer 1

Answer: (B)

$\frac { 8 } { 7 } P$

Answer 2

Adiabatic elasticity = γ (pressure)

For Argon $\left( E _ { \phi } \right) _ { A r } = 1.6 P$ and for Hydrogen

$\left( E _ { \phi } \right) _ { H _ { 2 } } = 1.4 P ^ { \prime }$

According to problem $= \frac { 8 } { 7 } P$.