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Question

An ideal gas undergoes four different processes from the same initial state (Figure Four processes are adiabatic, isothermal, isobaric and isochoric. Out of $$1, 2, 3$$ and $$4$$, which one is adiabatic?
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A
4
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B
3
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C
2
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D
1
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Solution

The correct option is B $$2$$
When a thermodynamic system undergoes a change in such a way that no exchange of heat takes place between it and the surroundings, the process is known as adiabatic process.
Graph $$4$$ is isobaric process, $$1$$ is isochoric. Of $$3$$ and $$2, 3$$ has the smaller slope (magnitude) hence is isothermal. Remaining process is adiabatic. So graph $$2$$ is adiabatic. Correct answer is option (C).

Physics

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