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Question

With respect to the first law of thermodynamics, which of the following statements is the most relevant?

A.

There is a natural tendency for any system to degenerate into a disordered state.

B.

Energy can be created or destroyed depending on the source of input.

C.

A process that involves transfer of heat energy is irreversible.

D.

Energy is always conserved.

Answer ( Option D)

Energy is always conserved.

Solution

First law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. This law is related to conservation of energy.

Hence, the correct option is (D).

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