Correct Answer - Option 1 : energy
Explanation:
According to the first law of Thermodynamics:
- The the change in internal energy of a system is equal to the sum of the heat exchanged with the surroundings and the amount of work done by the surrounding on the system.
⇒ Q = W + ΔU
Where U = internal energy of the system, Q = amount of heat, and W = work done
- The first law of thermodynamics is a restatement of the law of conservation of energy.
- It states that energy cannot be created or destroyed in an isolated system; energy can only be transferred or changed from one form to another.
- When heat energy is supplied to a gas, two things may occur:
- The internal energy of the gas may change
- The gas may do some external work by expanding.
- In any of the case. total energy will remains conserved.
The correct option is conservation of energy.
