Home
Class 12
PHYSICS
The mass of hydrogen molecule is 3.32xx1...

The mass of hydrogen molecule is `3.32xx10^(-27)` kg. If `10^(23)` hydrogen molecules strick per second at 2 `cm^(2)` area of a rigid wall at an angle of `45^(@)` from the normal and rebound back with a speed of 1000 `ms^(-1)`, then the pressure exerted on the wall is

A

`2.35 xx 10^2 "N/m"^2`

B

`4.70xx10^2 "N/m"^2`

C

`2.35 xx 10^3 "N/m"^2`

D

`4.70 xx10^3 "N/m"^2`

Text Solution

Verified by Experts

The correct Answer is:
C
`F_(" avg ")=2NmV cos theta`
Pressure =`(2Nm cos theta)/(A)`
`=(2(10^(23))(3.32xx10^(-27))(1)/(sqrt(7))xx10^(3))/(2xx10^(-4))= 2.35xx10^(3)N"/"m^2`.
Promotional Banner

Similar Questions

Explore conceptually related problems

The mass of hydrogen molecule is 3.32xx10^(-27) kg. If 10^(23) hydrogen molecules strick per second at 2 cm^(2) area of a rigid wall at an angle of 45^(@) from the normal and rebound back with a speed of 1000 ms^(-1) , then the pressure ezxeted on the wass is

The mass of hydrogen molecule is 3.23 xx 10^(23) hydrogen molecules strike 2 cm^(2) of a wall per second at an angle of 45^(@) with the normal when moving with a speed of 10^(5) cm s^(-1) , what pressure do they exert on the wall ? Assume collision to be elasitc.

10^(23) molecules of a gas, each having a mass of 3xx10^(-27) kg strike per second per sq. cm. of a rigid will at an angle of 60^(@) with the normal and rebound with a velocity of 500m//s . What is the pressure exerted by the gas molecules on the wall?

A ball of mass 0.1 kg strikes a wall normally with a speed of 30 m s ^( - 1 ) and rebounds with a speed of 20 ms ^( - 1 ) . The impulse of the force exerted by the wall on the ball is

A body of mass 2kg collides with a wall with speed 100 m/s and rebounds with same speed. If the time of contact was 1/50 second, the force exerted on the wall is

A body of mass 2 kg collides with a wall with speed 100 m / s and rebounds with same speed. If the time of contact was 1/50 second, the force exerted on the wall is

A body of mass 3kg moving with speed 5 ms^(-1) , hits a wall at an angle of 60^(@) and return at the same angle. The impact time was 0.2 sec. calculate the force exerted on the wall :