Question

A gas can be taken from A to B via two different processes ACB and ADB. When path ACB is used 60 J of heat flows into the system and 30 J of work is done by the system. If path ADB is used work down by the system is 10 J. the heat flow into the system in path ADB is
(A) 40 J (B) 80 J
(C) 100 J (D) 20 J [JEE Main 2019]

Answer 1

Answer:

100j

Explanation:

may it help you .......

Answer 2

Answer:

40J

Explanation:

First law of Thermodynamics -

Heat imported to a body in is in general used to increase internal energy and work done against external pressure.

For ACB

dQ=dU+dW

ΔQACB=ΔWACB+ΔUACB

60 J = 30 J +∆UACB

∆UACB= 30 J =∆UCAD

For ACD

∆QACD= 30 + 10 = 40 J

Hope it helps u