Home
Class 11
PHYSICS
Assertion : The rms velocity and most pr...

Assertion : The rms velocity and most probable speeds of the molecules in a gas are same.
The Maxwell distribution curve for the speed of the molecules in a gas is symmetrical.

A

If both assertion and reason are true and reason is the correct explanation os assertion.

B

If both assertion and reason are true but reason is not be correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
`v_(rms)=sqrt((3k_(B)T)/(m))or,sqrt((3RT)/(M))`
`v_("probable")=sqrt((2k_(B)T)/(m))or,sqrt((2RT)/(M))`
Maxwell distribution of speed is as shown

This is asymmetic. Therefore reason is also wrong.
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY

    NCERT FINGERTIPS|Exercise NCERT Exemplar|8 Videos

  • GRAVITATION

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • LAWS OF MOTION

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

Assertion : The root mean sguar and most probable speed of the molecules in a gas are the same Reason : The Maxwell distribation for the speed of molecules in a gas is symentrical

The rms speed of a gas molecule is

find the rms speed of oxygen molecules in a gas at 300K.

Respresent the relative values of most probable speed, average speed and root mean square speed on Maxwell's distribution curve for speeds.

The most probable speed of the molecules in a gas at temperature T_2 is equal to the average speed of the molecules at temperature T_1 Find T_2 //T_1

The average speed of gas molecules is equal to

v_(rms), v_(av) and v_(mp) are root mean square average and most probable speeds of molecules of a gas obeying Maxwellian velocity distribution. Which of the following statements is correct ?

Five molecules of a gas have speeds 1, 1, 3, 3, 2 km/s the value of the r.m.s spreed of the gas molecules is

Assertion: All molecules in a gas are moving with same speed. Reason: Speed of molecules in a gas follows Maxwell's distribution law.