ISRO Mechanical & Aerospace 2006 - Question 50

All ISRO Mechanical & Aerospace papers | ISRO Mechanical & Aerospace 2006

Topic: Thermodynamics

In case of ideal triatomic gas, the ratio of specific heat $C_{P}/C_{V}$ would be-

  • A. 1
  • B. 1.33
  • C. 1.40
  • D. 1.41

Answer: B. 1.33

Explanation: Specific heat ratio $\gamma=\frac{C_{P}}{C_{V}} = 1+\frac{2}{f}$, where f is degree of freedom. For a triatomic gas (non-linear), $f=6$. So $\gamma=1+\frac{2}{6}=1.33$.

| | All questions of ISRO Mechanical & Aerospace 2006