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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 14 - KTG and Thermodynamics > Three processes compose a thermodynamic cycle shown in the accompanying P-V diagram. Process 1 to 2 takes place at constant temperature process 2 to 3 takes place at constant volume. During this process 40 J of heat leaves the system. Process 3→1 is adiabatic. What is the change in internal energy of the system during process 3→1?

Three processes compose a thermodynamic cycle shown in the accompanying P-V diagram. Process 1 to 2 takes place at constant temperature process 2 to 3 takes place at constant volume. During this process 40 J of heat leaves the system. Process 3→1 is adiabatic. What is the change in internal energy of the system during process 3→1?

A gas is heated at a constant pressure. The fraction of heat supplied used for external work is :