Q.
A thermally insulated container is divided into two parts by a screen. In one part the pressure and temperature are $P$ and $T$ for an ideal gas filled. In the second part it is vacuum. If now a small hole is created in the screen, then the temperature of the gas will
A) Decrease
B) Increase
C) Remain same
D) None of the above
Explanation
(c) This is the case of free expansion of gas. In free expansion $\mathrm{\Delta}U = 0 \Rightarrow$ Temp. remains same
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.