Four molecules of a gas have speeds of 1...

Four molecules of a gas have speeds of `1, 2, 3, 4 cm s^(-1)` respectively. The root mean square velocity is

A

`sqrt(7.5)`

B

`sqrt(30)`

C

30

D

0.15

Verified by Experts

The correct Answer is:

A

`u=sqrt((1^(2)+2^(2)+3^(2)+4^(2))/(4 ))=sqrt((30)/(4))=sqrt(7.5)`

STATES OF MATTER : GASES AND LIQUIDS
MARVEL PUBLICATION|Exercise NUMERICALS|43 Videos
SOLID STATE
MARVEL PUBLICATION|Exercise Multiple choice questions|183 Videos
SURFACE CHEMISTRY
MARVEL PUBLICATION|Exercise TEST YOUR GRASP|35 Videos

Similar Questions

Explore conceptually related problems

Four molecule of a gas are having speeds of 1, 4, 8 and 16 ms^(-1) . The root mean square velocity of the gas molecules is

Four molecules of a gas have speed 1, 2, 3 and 4 km s^(-1) respectively. The value of rms speed of the molecules is (in km s^(-1) )

N (lt 100) molecules of a gas have velocities 1,2,3….N km/s respectively. Then

Four molecules of a gas have velocity 2, 4, 6 and 8 kms^(-1) , respectively. The ratio of their root mean velocity and average speed is :

Four molecules of ags have speeds 1,2,3 and 4 km//s .The volue of the root mean square speed of the gas molecules is

Four molecules of a gas have speeds 2, 4, 6 and 8 kms^(-1) respectively. Calculate their average speed and root mean square speed.

N molecules of a gas have speeds 1,2,3....Nm/s respectively.The ratio of rms speed to average speed is

Five molecules of a gas moving with speeds 1,2,3,4,5km/s .What is their root mean square speed?