There is no atmosphere on the moon. It is because-

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(b) The gravitational force is comparatively small — The presence or absence of atmosphere on a celestial body depends on two things- one is the escape velocity of that body and the other is the temperature of the surface of the body. The gravitational force on the moon is very low, hence the escape velocity of gases is very low, Due to this, the gases get diffused on the surface of the moon. This is the reason why there is no atmosphere on the moon.

Answer

(A) There is no gravitational force

Answer

(C) Gravitational force is very high

Answer

(D) Molecules of different gases repel one another on the moon

There is no atmosphere on the moon. It is because-

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