Home
Class 11
PHYSICS
Four particles have speed 2,3,4 and 5 cm...

Four particles have speed 2,3,4 and 5 cm/s respectively. Their rms speed is :

A

3.5 cm/s

B

(27/2)cm/s

C

`sqrt(54)cm//s`

D

`sqrt(54)`/2 cm/s

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    AAKASH SERIES|Exercise Problems|12 Videos

  • KINETIC THEORY OF GASES

    AAKASH SERIES|Exercise Exercise -I|50 Videos

  • KINETIC THEORY OF GASES

    AAKASH SERIES|Exercise EXERCISE-3(Kinetic Theory of an ideal gas)|4 Videos

  • KINEMATICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICE SHEET (ADVANCED)) (Integer Type Questions)|12 Videos

  • LAWS OF MOTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE|108 Videos

Similar Questions

Explore conceptually related problems

Four molecules of a gas have speeds 1,2,3 and 4 km//s . Find the rms speed of the gas molecule.

Four molecules of a gas have speeds 1,2,3 and 4 km.s. Find the rms speed of the gas molecule.

Knowledge Check

  • Four particles have speeds 2, 3, 4 and 5 cm/s respectively. Their rms speed is

    A
    `3.5 cm//s`
    B
    `(27//2) cm//s`
    C
    `sqrt(54) cm//s`
    D
    `sqrt( 54)//2 cm//s`

  • The respective speeds of the molecules are 1, 2, 3, 4 and 5 km/sec. The ratio of their r.m.s velocity and the average velocity will be

    A
    `sqrt(11):3`
    B
    `3 : sqrt(11)`
    C
    `1:2`
    D
    `3:4`

  • Two particles are projected with speed 4 m/s and 3 m/s simultaneously from same point as shown in the figure. Then:

    A
    Their relative velocity is along vertical direction
    B
    Their relative acceleration is non-zero and it is along vertical direction
    C
    They will hit the surface simultaneously
    D
    Their relative velocity is constant and has magnitude 1.4 m/s

    • Similar Questions

    Explore conceptually related problems

    What is R.M.S speed?

    What is RMS speed ?

    Two trains A and B travel in two parallel rain tracks in opposite direction with speed v_(1) and v _(2) respectively. They take 4 s to pass each other at this speed. If thte speed of train A is increased by 50% then they take 3 s to pass each other. The ratio of v_(1)//v_(2) is

    Two particles A and B of mass m_(A) and m_(B) respectively and having the same charge are moving in a plane. A uniform magnetic field exists perpendicular to this plane. The speeds of the particles are v_(A) and v_(B) respectively, and the trajectories are as shown in the figure. Then

    Four lead spheres a,b,c and d whose radii 1 cm, 2 cm, 3cm and 4 cm respectively are dropped into different liquids of co-efficients of viscosity 1xx10^(-3)Pa-s,2xx10^(-5)Pa-s,6.5xx10^(-3)Pa-s,15.4xx10^(-3)Pa-s . Arrange the spheres with their terminal velocity in descending order

    Home
    Profile