Question

An ideal gas is compressed isothermally.what is the change in internal energy of gas.Give reason to your answer.

Answer 1

Internal Energy is the function of temperature and volume for a most general case.

but in case of ideal gas, since their is no internal force of attraction between molecules of gas so internal energy remains function of temperature only.

here is a specific case of ideal gas, that is we are considering isothermal process i.e the temperature remains constt. so the change in temp. is zero giving change in internal energy ZERO.

u can also understand it by defination of specific heat capacity given in picture