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 total force acting on the wall normally is

Answer»

10 N
0.4692 N
0.568 N
0

Answer :B


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