Thermodynamics - Result Question 13
14. Figure below shows two paths that may be taken by a gas to go from a state $A$ to a state $C$.
In process $A B, 400 J$ of heat is added to the system and in process $BC, 100 J$ of heat is added to the system. The heat absorbed by the system in the process $AC$ will be
[2015]
(a) $500 J$
(b) $460 J$
(c) $300 J$
(d) $380 J$
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Answer:
Correct Answer: 14. (b)
Solution:
- (b) In cyclic process $ABCA$
$ Q _{\text{cycle }}=W _{\text{cycle }} $
$Q _{AB}+Q _{BC}+Q _{CA}=$ ar. of $\triangle ABC$
$+400+100+Q _{C \to A}=\frac{1}{2}(2 \times 10^{-3})(4 \times 10^{4})$
