Thermodynamics Question 123
Question: If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be
[AMU (Engg.) 1999; BHU 2000]
Options:
A) 260 J
B) 150 J
C) 110 J
D) 40 J
Show Answer
Answer:
Correct Answer: D
Solution:
$ \Delta Q=\Delta U+\Delta W $
$ \Rightarrow \Delta U=\Delta Q-\Delta W=150-110=40\ J $
