Question bank/JEE Main/Physics

A system undergoes three quasi-static processes sequentially as
indicated in the given figure. $1 \rightarrow 2$is an isobaric process,
$2 \rightarrow 3$ is a polytrophic process with
$\gamma = \frac{4}{3}$and $3 \rightarrow 1$ is a process in which PV=
constant.
$P_{2} = P_{1} = 4 \times 10^{5}Nm^{- 2},P_{3} = 1 \times 10^{5}Nm^{- 2}$and$\ V_{1} = 1m^{3}$.
The heat transfer of the cycle is $\Delta Q,$ change in internal
energy is $\Delta U$ and the work done is $\Delta W$. for polytropic
process $PV^{\gamma} =$ constant.
(Take $\mathcal{l}$n2 = 0.693). Then,d s fp=kuqlkj rhu vnZ~/k&fLFkj çØeks ls xqtkjk A
vkarfjd

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For the process izØe ds fy, 3 → 1
[IMAGE] For the processizØe ds fy, 2→ 3
[IMAGE] For the processizØe ds fy, 1 → 2
[IMAGE] For the processizØe ds fy, 2 → 3
[IMAGE] For the process 3 → 1
[IMAGE] For cyclic process pØh
$= 1.08 \times 10^{5}J$

Source: Grass-G / Ph-25 Physics paper 7 Jan.docx