Questions
There is no atmosphere on moon because
a
It is closer to earth
b
It revolves round the earth
c
It gets light from the earth
d
RMS speed of gas molecules is greater than the escape velocity on the surface of the moon.
detailed solution
Correct option is D
When moon was formed, its temperature was very high. As a result r.m.s. speed of the molecules of gases surrounding the moon Vrms=3kTmwas high and greater than the escape velocity Ve=2GMmRmfrom the surface of moon.Hence, option -(4) is correct.Talk to our academic expert!
Similar Questions
The masses, each of mass m are kept on the vertices of an equilateral triangle of side a. Find the work needed to be done to change the length of the triangle twice of its original value.
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