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The earth retains its atmosphere, due to...

The earth retains its atmosphere, due to

A

The earth is sphere

B

the earth has population

C

the escape velocity of molecules is less than the mean speed of molecules

D

the escape velocity of molecules is more than the mean speed of molecules

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The correct Answer is:
D
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FIITJEE-GRAVITATION-Assigment problems (Objective) (level-I)
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  2. The weight of a dody at earth's surface is W. At a depth halfway to th...

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  3. The earth retains its atmosphere, due to

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  4. A satellite is moving around the earth's with speed v in a circular or...

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  5. If mass of a body is M on the earth surface, then the mass of the same...

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  6. If g is the acceleration due to gravity on earth's surface, the gain o...

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  7. What will be the formula of mass of the earth in terms of g , R and G ...

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  8. A planet is revolving around the sun in an elliptical orbit. Which out...

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  9. A particle is situated at a height 3 R from the earth surface . The ve...

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  10. A particle falls towards the earth from inifinity. The velocity with w...

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  11. Three particles of equal mass M each are moving on a circular path wit...

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  12. With what velocity should a particle be projected so that its height b...

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  13. Radius of orbit of satellite of earth is R. Its kinetic energy is prop...

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  14. In some region, the gravitational field is zero. The gravitational pot...

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  15. Escape velocity at earth's surface is 11.2km//s. Escape velocity at th...

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  16. Two sphere of masses m and M are situated in air and the gravitational...

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  17. At what depth below the surface of the earth acceleration due to gravi...

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  18. An objects is projected vertically upwards from the surface of the ear...

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  19. The radius of orbit of a planet is two times that of the earth. The ti...

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  20. The orbital velocity of an artifical satellite in a cirular orbit abov...

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