KVPY 2019 SA Exam Previous Papers

Question : 42 of 80

Marks: +1, -0

During the free expansion of an ideal gas in an isolated chamber,

Solution:

Free expansion of gas
when a gas expands in vacuum work done by if is = 0 As

P_ \ext =0

As no heat is supplied to the system q = 0 &

∆ E=∆ H =∆T= 0

So, internal energy remains constant.

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