First law of thermodynamics is an extension of the law of conservation of energy to
systems which are.
(a) isolated (b) open (c) closed (d) both (b) and (c)
Answers
Explanation:
The first law of thermodynamics is generally thought to be the least demanding to grasp, as it is an extension of the law of conservation of energy, meaning that energy can be neither created nor destroyed. However much energy there was at the start of the universe, there will be that amount at the end.
Closed
Explanation:
The first law of thermodynamics states that "the change in internal energy of the system is the difference of heat added to the system and work done by the system".
ΔU = Q - W
where, ΔU = Change in internal energy of the system
Q = heat added to the system, and
W = work done by the system
This law is only applicable to a closed system because it assumes that the system can exchange energy from its surroundings while its contents remain the same. An isolated system can not exchange energy.