Q10 of 27 Page 85

Consider a cycle followed by an engine (Fig. 12.6) 1 to 2 is isothermal 2 to 3 is adiabatic 3 to 1 is adiabatic Such a process does not exist because


If two(similar) curves eat each other it means one could transform from one state to another without changing energy(heat) which is not possible.

Heat cannot be converted completely to mechanical energy.


option (a, c) is correct.

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Can a system be heated and its temperature remains constant?