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If velocities of 3 molecules are 5 m/s, ...

If velocities of 3 molecules are 5 m/s, -6m/s and 7 m/s respectively, then their mean squar evelocity in `m^(2)//s^(2)`

A

`11m^(2)//s^(2)`

B

`36.7m^(2)//s^(2)`

C

`6m^(2)//s^(2)`

D

`2m^(2)//s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`C^(2)=(C_(1)^(2)+C_(2)^(2)+C_(3)^(2))/(3)=(25+36+49)/(3)`
`=(110)/(3)=36.66`
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