The V-T diagram of an ideal gas for the process $A \to B \to C$ is as shown in the figure. Select the correct alternative (s).

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Pressure of the gas first increases then remains constant

Pressure of the gas first decreases then remains constant

Pressure of the gas remains constant throughout

Nothing can be said about the pressure of the gas from this graph

answer is A.

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Detailed Solution

$\begin{array}{r} PV = nRT \\ P = \frac{nRT}{V} \end{array}$

$s o, P \propto \frac{1}{slope}$

now,
from A to B and from B to C
slope is constant ,it just changes its value at point B
hence ,
Pressure of the gas remains constant throughout. Hence option A is correct.

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