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Question

Three closed vessels A, B and C are the same temperature T and contains gases which obey Maxwell distribution law of speeds. Vessel A contains O2, B only N2 and C contain a mixture of equal quantities of O2 and N2. If the average speed of the molecules of O2 in vessel A in u1, that of N2 molecules in the vessel B is u2, the average speed of the molecules of O2 in vessel C is:

A
u1+u22
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B
u1
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C
4u2
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D
3RTM
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Solution

The correct option is A u1
As we know,
uAV=8RTπM=u1
As all containers are at same temperature so avg. velocity of O2 in C is
uAV=8RTπM=u1

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