question_answer

Which of the following is incorrect regarding the first law of thermodynamics?      [AIEEE 2005]

A)  It is not applicable to any cyclic process

B)  It is a restatement of the principle of conservation of energy

C)  It introduces the concept of the internal energy

D) None of these

Correct Answer: D

Solution :

(a, d) Statements [a] and [d] are wrong.

[a] It is applicable for cyclic process.

and  for cyclic process.

[b] Its equationimplies that energy is utilised inandconservation of energy.

[c] Concept ofis introduced by it

[d] Concept of entropy is introduced in IInd law only.