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Question: Answered & Verified by Expert
An ideal mono-atomic gas of given mass is heated at constant pressure. In this process, the fraction of supplied heat energy used for the increase of the internal energy of the gas is
PhysicsThermodynamicsWBJEEWBJEE 2013
Options:
  • A $3 / 8$
  • B $3 / 5$
  • C $3 / 4$
  • D $2 / 5$
Solution:
1033 Upvotes Verified Answer
The correct answer is: $3 / 5$
Fraction $=\frac{\Delta U}{\Delta Q}=\frac{C_{Y}}{C_{p}}$
For monoatomic gas $\frac{C_{p}}{C_{\gamma}}=\gamma=\frac{5}{3}$
So, $\quad \frac{C_{\gamma}}{C_{p}}=\frac{1}{\gamma}=\frac{3}{5}$

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