If amount of heat given to a system is 50 J and work done on the system is 15 J, then change i

step 1 As we know that, as we know that DLU is equal to hit given to the system Hit given to the system

If amount of heat given to a system is 50 J and work done...

If amount of heat given to a system is $50 \mathrm{~J}$ and work done on the system is $15 \mathrm{~J}$, then change in internal energy of the system is
(A) $35 \mathrm{~J}$
(B) $50 \mathrm{~J}$
(C) $65 \mathrm{~J}$
(D) $15 \mathrm{~J}$

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Key Concepts

Internal Energy

Internal energy is the total energy contained within a system, encompassing both the kinetic and potential energies of its molecules. Changes in internal energy are determined by the balance between the heat exchanged and the work performed on or by the system.

First Law of Thermodynamics

This principle states that the change in the internal energy of a system is equal to the net heat added to the system plus the net work done on the system. It is a statement of energy conservation and forms the foundation of energy transfer analysis in thermodynamics.

Heat Transfer

Heat represents the energy exchanged between a system and its surroundings due to a temperature difference. In thermodynamics, heat transfer is a mechanism by which a system can gain or lose energy.

Work in Thermodynamics

Work in a thermodynamic context refers to the energy transfer that occurs when a force is applied over a distance. The sign convention is important; work done on the system adds energy to the system, while work done by the system subtracts from its internal energy.

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