Moon has no atmosphere because: - Vidyadip

MCQ

Moon has no atmosphere because:

A
It is far away form the surface of the earth.
B
Its surface temperature is $10^\circ C.$
✓
The $\text{r.m.s.}$ velocity of all the gas molecules is more then the escape velocity of the moons surface.
D
The escape velocity of the moons surface is more than the $\text{r.m.s}$ velocity of all molecules.

✓

Answer

Correct option: C.

The $\text{r.m.s.}$ velocity of all the gas molecules is more then the escape velocity of the moons surface.

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