Q. The temperature of $1$ mole of an ideal monoatomic gas is increased by $50^\circ$C at constant pressure. The total heat added and change in internal energy are $E_1$ and $E_2$, respectively. If $\frac{E_1}{E_2}=\frac x9$ then the value of $x$ is ______.

Numerical Question

This is a numerical-answer question. The correct answer is shown below.

Explanation

[Solution by Dr. Abubacker] $E_1=nC_p\Delta T=\frac52R\Delta T$ and $E_2=nC_v\Delta T=\frac32R\Delta T$, so $\frac{E_1}{E_2}=\frac53=\frac x9\Rightarrow x=15$. Answer: 15.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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