Question

State whether the given statement is True or false:
The energy which is used up cannot be reversed to its original state.
(A) True
(B) False

Answer 1

Thermodynamics is an important branch of science. It deals with the quantities like heat, internal energy, and work done. There were some important laws in thermodynamics namely first law, second law, and third law of thermodynamics. The first law of thermodynamics deals with energy.

Complete Step By Step Answer:
The first law of thermodynamics is also known as the law of conservation of energy. The first law of thermodynamics can be defined in two different ways. One definition states that the amount of heat energy given to a system will be utilized to do the work done by a system and to bring a change in internal energy.
Another definition of the first law of thermodynamics states that the energy is conserved which means energy can neither be created nor destroyed, but it can transfer from one form to another form. Thus, the energy of the universe is constant and it can exchange between the surroundings and system.
From the above definition, it is clear that the energy which is used up cannot be reversed to its original state.
Thus, the given statement is true.

Note:
There are so many real-life applications of the first law of thermodynamics. An electric bulb converts electrical energy into light energy and plants convert the solar energy absorbed by them to chemical energy. In humans the chemical energy stored by eating food can be utilized to do activities.