1.

Gas at a pressure P_(0) is contained in a vessel. If the masses of all the molecules are halved and their speeds are doubled, the resulting pressure P will be equal to

Answer»

`4P_(0)`
`2P_(0)`
`P_(0)`
`P_(0)//2`

SOLUTION :According to the KINETIC theory of gases
`P_(0)=(1)/(3)(mNv_(rms)^(2))/(V)`
when `m=(m)/(2),v_(rms)=2v_(rms)" then"`
`P.=(1)/(3)((m)/(2))xxNxx(2v_(rms))^(2)=2P_(0)`


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