Question

Which of the following can be considered as the definition of energy?

a.. Q=

A+Q

b. first law of thermodynamics

c. both a and b d. None of these​

Answer 1

Answer:

b first law of thermodynamic

Answer 2

Answer:

The option (B) First law of thermodynamics is correct.

Explanation:

Energy

• It is defined as the ability to do work or bring about any changes.
• Energy can never be created or destroyed by any means.  
• There are various forms of energy. Eg-

1. Potential Energy
2. Kinetic Energy
3. Sound Energy

First law of thermodynamics

• Energy can neither be created nor destroyed, but the conversion may take place from one form to another.
• Each time a specific amount of energy disappears, an exact equivalent amount of some other form of energy is produced.

• Whenever there is an isolated system, its total energy remains constant, though its transformation from one form to another may occur.

Conclusion:

Option (B) First law of thermodynamics is correct.