This a very basic question..but I am getting different answer when I apply work energy theorem and force method to solve for final pressure..the method by force yields correct answer ...someone pls vedify. ..

# Doubt from thermodynamics

800 K, for the first one?

Bro that is correct..did you solve by work method?

Not force waala method bro..facing problem when using work energy theorem..

I am getting final pressure to be different in the 2nd method...

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bro i am getting 10^(-5/3) cm , which are not in options..

What method did you take? ?

Let intermolecular distance be D then in a volume there is only one

or, we can use

P = (n/v)KT

N=P/KT

then we will get volume occupied by 1 molecule

then side length = (volume)^1/3

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This is not giving the same answer. .