Question
Physics Question on Gravitation
There is no atmosphere on the moon, because
A
escape velocity of gas molecules is less than their root mean square velocity
B
it is closer to the earth and also it has the inactive inert gases in it
C
escape velocity of gas molecules is greater than their root mean square velocity
D
it is too far from the sun and has very low pressure in its outer surface
Answer
escape velocity of gas molecules is less than their root mean square velocity
Explanation
Solution
Answer (a) escape velocity of gas molecules is less than their root mean square velocity