Q. A perfect gas contained in a cylinder is kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas
A) Remains constant
B) Becomes zero
C) Increases
D) Decreases
Explanation
(a) During free expansion of a perfect gas no work is done and also no heat is supplied from outside. Therefore, no change in internal energy. Hence, temperature remains constant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.