Thermodynamics Question 317
Question: Choose the correct statement for an isolated system.
Options:
A) $ \Delta U(C\to D)= $ negative
B) $ \Delta Q(A\to B)= $ positive
C) $ \Delta U=(A-B-C-D-A)\ne 0 $
D) $ \Delta Q(D\to A)=0 $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Idea In an isolated system no heat is exchanged between system and surrounding during process.
Here as system is isolated $ \Delta Q=0, $ for any part of system in graph.
TEST Edge Question from p-V curve are very important from examination point of view, conceptual clearity is necessary to tackle.
These problems, a problem which seem difficult may involve a basic concept with which it can be solved easily.
Work done in p-V curve, change in internal energy etc., are common questions which are asked in examination.
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