Question

Which of the following statements is correct according to Clausius statement of second law of thermodynamics ?

• A. It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature
• B. It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source
• C. It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle
• D. None of the above

Answer 1

The correct option is B It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source

Clausius statement states “it is impossible for a self acting machine working in a cyclic process without any external force, to transfer heat from a body at a lower temperature to a body at a higher temperature. It considers transformation of heat between two heat reservoirs".