A gas is allowed to expand isothermally. The root mean square velocity of the molecules
A
Will increase
B
Will decrease
C
Will remain unchanged
D
Depends on the other factors
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C
Will remain unchanged
c $(R . M \cdot S) \text { velocity }=\sqrt{\frac{3 R T}{M}}$
In Isothermal expansion, temperature of a gas remains unchanged.
So, $(R.M.S)$ velocity will remain unchanged.
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