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PV Work

The initial s...

Question

The initial state of certain gas is $(P_{i}, V_{i}, T_{i})$ . It undergoes expansion till its volume becomes $V_{f}$ at constant temperature T. The correct plot of P-V diagram for it is

A

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B

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C

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D

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Solution

The correct option is A
As PV = nRT
At constant temperature
$P_{i} V_{i} = n R T$ and $P_{f} V_{f} = n R T$
$\Rightarrow P_{i} V_{i} = P_{f} V_{f}$
In the given P-V diagram (a) at every point on the plot P-V is constant which shows a process at constant temperature i.e isothermal process.

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