N molecules each of mass m of gas A and 2N molecules each of mass 2m of gas B are contained in the same vessel at temperature T. The mean square of the velocity of molecules of gas B is v 2 and the mean square of x component of the velocity of molecules of gas A is w 2 . The ratio 
is
A
1
B
2
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Mean square velocity of molecule 
For gas A , x component of mean square velocity of molecule 
∴ ∴ Mean square velocity 
…..(i)
For B gas mean square velocity 
…..(ii)
From (i) and (ii) 
so 
.
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