Certain amount of heat supplied to an ideal gas under isothermal conditions will result in

Options

A. A rise in temperature
B. Doing external work and a change in temperature
C. Doing external work
D. An increase in the internal energy of the gas

Answer

C

Explanation

From first law of thermodynamics
`dQ = dU + dW`
in isothermal process, T = constant, therefore `dU = 0`
`dQ = dW`
So, the amount of heat supplied to an ideal gas will result in an increase in the internal energy of the gas.