JEE Main PAPER - 1

The mass of a hydrogen molecule is $3.32 \times 10^{-27} \text{ kg}$  . If $10^{23}$   hydrogen molecules strike, per second, a fixed wall of area $2 \text{ cm}^2$   at an angle of $45^\circ$   to the normal, and rebound elastically with a speed of $10^3 \text{ m/s}$  , then the pressure on the wall is nearly: