During isothermal process, (A) Temperature remains the same. (B) Change in internal energy is zero. (C) Pressure is constant. (D) Volume changes slowly.
In an isothermal process, the temperature of the whole system is always the same and as well as the change in internal energy in isothermal process of the system is always zero. So, the correct option is During isothermal process (A) Temperature remains same and (B) Change in internal energy is zero.