Question

8 3. Which of the following relations holds good when no
work is done on the system, but x amount of heat is taken
out from the system and given to the surroundings?
(a) AU= x
(b) AU= -2
(c) ΔU = ΔΕ
(d) AU= -AE​

Answer 1

Answer:

option a.

Explanation:

By 1st law of thermodynamics

U = q + W

and if W=0,

U = q = x