JEE Main 2018Session, Shift 1PhysicsHardRotational Motion140× since 2002
The mass of a hydrogen molecule is 3.32 10⁻²⁷ kg. If 10²³ hydrogen molecules strike, per second, a fixed wall of area 2 cm² at an angle of 45^o to the normal, and rebound elastically with a speed of 10³ m/s, then the pressure on the wall is nearly: