1.

Passage-II : The mass of hydrogen molecule is 3.32 xx 10^(-27) kg. If 10^(23) hydrogen molecules strike a fixed wall of area 2cm^(2) at an angle 45^(@) to the normal, per second and rebound elastically with a speed of10^(3) m//s then The pressure exerted on the wall by the hydrogen gas is

Answer»

`1.346 XX 10^(3) N//m^(2)`
`2.346 xx 10^(3) N//m^(2)`
`4.692N//m^(2)`
`46.92 N//m^(2)`

ANSWER :B


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