Total amount of energy in the universe is

Total amount of energy in the universe is

a. increasing
b. decreasing
c. constant
d. none of the above

Correct Answer : c. constant

Explanation :

The first law of thermodynamics states that the energy can neither be created nor be destroyed. It can only gets transformed from one form to another form. The universe consists of the system as well as the surrounding together. Energy can only be transferred from system to surrounding or surrounding to system in various forms, but it can never be destroyed or created. Thus the total amount of energy in the universe is constant. We can not produce a device which can supply mechanical work without consuming any energy.