Air in a cylinder is suddenly compressed by a piston which is then maintained at the same position. After sometime, the ___________
A. Pressure will increase
B. Pressure remains the same
C. Pressure will decrease
D. Pressure may increase or decrease
I got this question during an interview.
Question is from Isothermic and Adiabatic Process in division Kinetic Theory of Gases of Engineering Physics I
Right choice is C. Pressure will decrease
The explanation is: Sudden compression increases inside temperature. After sometime heat flows out. This decreases temperature of the air, As V is constant, so pressure inside decreases.