Question

1. Identify limitations on the application of Conservation of Energy.

Answer 1

Conservation of energy states that Energy neither created nor destroyed, It can only be converted to one form to another.

But there are certain limitations and drawbacks to this concept.

• It gives a definite relationship between the energy absorbed and work done by the system, but it does not tell about the direction of energy flow

Example: The hot body cools by releasing energy but the reverse is not possible.

• According to the conservation of energy the energy of an isolated system remains constant during a specifies change of sate. But it does not tell whether that specifies change including chemical reaction can occur spontaneously i.e whether it is feasible
• It states that energy in one form can be converted to equivalent energy in another form but it does not tell that energy can not be completely converted into an equivalent amount of work without producing some change elsewhere
• Some forms of energy are very hard to measure especially energy lost through friction, heat, and sound
• According to this law, every conservation is possible like Work ------->Heat and Heat------->Work, But practically, Work ------->Heat(Possible) and Heat------->Work(Not always)

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