In a thermal process, the pressure of a fixed mass of a gas is changed in such a manner that the gas molecules give out the heat of 30J and work of 10J is done on the gas. If the initial internal energy of the gas was 40 J, then the final internal energy will be?
(a) 30 J
(b) 20 J
(c) 60 J
(d) 40 J
I got this question during an online exam.
The above asked question is from Thermodynamics in section Kinetic Theory of Gases of Engineering Physics I