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In the two vessels of same volume, atomic hydrogen and helium at pressure 1 atm and 2 atm are filled. If temperature of both the sample is same then average speed of hydrogen atoms `ltC_(H)lt` will be related to that of helium `ltC_(He)gt` as

A

`ltC_(H)gt=sqrt2ltC_(He)gt`

B

`ltC_(H)gt"="ltC_(He)gt`

C

`itC_(H)gt"="2itC_(He)gt`

D

`ltC_(H)gt"="(ltC_(He)gt)/2`

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