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There is no atomosphere on moon because...

There is no atomosphere on moon because

A

it is close to the earth

B

it revolves round the earth

C

the escape velocity of the gas molecules is less than their rms velocity on the moon

D

the escape velocity of the gas molecules is more than their rms velocity on the moon.

Text Solution

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The correct Answer is:
C
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CP SINGH-GRAVITATION-EXERCISE
  1. The mass of a spaceship is 1000kg. It is to be launched from the earth...

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  2. There are two planets. The ratio of radius of two planets is k but rat...

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  3. There is no atomosphere on moon because

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  4. A projectile is launched from the surface of earth with a velocity les...

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  5. The ratio of the K.E. required to the given to the satellite to escape...

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  6. The escape velocity for a planet is ve. A particle is projected from i...

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  7. A particle of mass 'm' is projected from the surface of earth with vel...

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  8. The earth is assumed to be a sphere of raduis R. A plateform is arrang...

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  9. A satellite is moving with a constant speed 'V' in a circular orbit ab...

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  10. An object is weighted at the North Pole by a beam balance and a spring...

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  11. Let omega be the angular velocity of the earth's rotation about its ax...

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  12. Let omega be the angular velocity of the earth's rotation about its ax...

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  13. Two bodies of masses m1 and m2 are initially at rest at infinite dista...

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  14. A double star is a system of two stars of masses m and 2m, rotating ab...

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  15. Three point masses are at the corners of an equilateral traingle of si...

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  16. A point P lies on the axis of a fixed ring of mass M and radius a, at ...

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  17. The escape velocity for a planet is ve. A particle starts from rest at...

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  18. A small body of superdense material, whose mass is twice the mass of t...

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  19. In the previous questions, if the mass of the body is half the mass of...

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  20. A binary star system consists of two stars A and B which have time per...

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