JEE MainPhysicsModerateThermodynamics

$\$ Figure below shows two paths that may be taken by a gas to go
from a state A to a state C.
[IMAGE] In process AB, 400J of heat is added to the system and in process BC,
100J of heat is added to the system.The heat absorbed by the system in
the process AC will be

Show answer and solution

For a complete cycle

Q_{cycle\ } = W_{cycle\ }

+ 400 + 100 + Q_{C \rightarrow A} = \frac{1}{2}\left( 2 \times 10^{- 3} \right)\left( 4 \times 10^{4} \right)

\Rightarrow \ \ \ \ Q_{C \rightarrow A} = - 460J

\Rightarrow \ \ \ \ Q_{A \rightarrow C} = + 460J

Source: Grass-G / P-08 Physics paper 23 October.docx

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