Kinetic Theory Of Gases Question 33
Question: Helium gas is filled in a closed vessel (having negligible thermal expansion coefficient) when it is heated from 300 K to 600 K, then average kinetic energy of helium atom will be
Options:
A) $ \sqrt{2} $ times
B) 2 times
C) unchanged
D) half
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Average K.E. $ =\frac{1}{2}mc^{2}=\frac{3}{2}kT $ 3
$ \
Therefore \frac{{{( \text{Av}\text{. K}\text{.E}\text{.} )} _{600K}}}{{{( \text{Av}\text{. K}\text{.E}\text{.} )} _{400K}}}=\frac{600}{300}=2 $
$ \
Therefore $ At 600K it will be 2 times than that at 300K.
BETA
