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  4. Consider P-V diagram for an ideal gas shown in figure <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/e9c2e9f75d882997d2d0e56b2e969a5d-.png /> Out of the following diagrams, which represents the T-P diagram? <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/7f177ae24aa49e5e136fdb15c2003041-.png />

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Q. Consider $P-V $ diagram for an ideal gas shown in figure
image
Out of the following diagrams, which represents the $T-P$ diagram?
image

Thermodynamics

Solution:

In the graph given in question,
$P V =$ constant
And $P V = nRT$
So, $T =$ constant
And, on going from $1$ to $2$ ' $P$ ' is decreasing.
These two conditions are satisfied by the graph in option (iii)