A) \[{{M}^{1/2}}\]
B) \[{{M}^{0}}\]
C) \[{{M}^{-1/2}}\]
D) \[M\]
Correct Answer: C
Solution :
Root mean square velocity is given as, \[{{U}_{rms}}=\sqrt{\frac{3RT}{M}}\] \[\therefore \] \[{{U}_{rms}}\propto \sqrt{\frac{1}{M}}\] or \[\propto {{M}^{-1/2}}\]
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