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If earth decreases its rotational speed ...

If earth decreases its rotational speed without changing other factors. Match the following.

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A, B, C, D
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If earth decreases its rotational speed. Match the following columns {:(,"Column-I",,"Column-II"),("(A)","Value of g at pole","(p)","Will remain same"),("(B)","Value of g at equator","(q)","Will increase"),("(C)","Distance of geostationary","(r)","Will decrease"),("(D)","Energy of geostationary satellite","(s)","Cannot say"):}

If radius if earth is reduced to half without changing its mass, then match the following columns {:(,"Column-I",,"Column-II"),("(A)","Angular momentum of earth","(p)","Will become two times"),("(B)","Time period of rotation of earth","(q)","Will become four times"),("(C)","Rotational kinetic energy of earth","(r)","Will remain constant"),("(D)",,"(s)","None"):}

Assertion : If radius of earth suddenly shrinks to half its present without changing its mass value, then the period of an earth's satellite will not change Reason : Time period of a satellite does not upon the mass of earth.

If radius of earth is reduced to half without changing its mass,

A satellite is revolving around earth in its equatorial plane with a period T . If the radius of earth suddenly shrinks to half without change in the mass. Then, the new period of revolution will be

On the surface of earth acceleration due gravity is g and gravitational potential is V. Match of following columns {:(,"Column-I",,"Column-II"),("(A)","At height h=R, value of g","(p)","Decreases by a factor" (1)/(4)),("(B)","At depth " h =(R)/(2)"," "value of g","(q)","Decrease by a factor" (1)/(2)),("(C)","At height "h=R",""value of V","(r)","Increase by a factor" (11)/(8)),("(D)","At height "h=(R)/(2)"," "value of V","(s)","Increase by a factor 2"),(,,"(t)","None"):}

If the radius of the earth decreases by 1% without changing its mass, will the acceleration dure to gravity at the surface of the earth increase or decrease? If so, by what per cent?

If radius of the earth contracts to half of its present value without change in its mass, what will be the new duration of the day?

If the radius of the earth contracts to half of its present value without change in its mass, what will be the new duration of the day?

If the radius of the earth contracts to half of its present value without change in its mass, what will be the new duration of the day?

DC PANDEY ENGLISH-GRAVITATION-All Questions
  1. A particle is projected from the surface of earth of mass M and radius...

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  2. In elliptical orbit of a planet, as the planet moves from apogee posit...

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  3. Match the following

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  4. Let V and E denote the gravitational potential and gravitational field...

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  5. Two concentric spherical shells are as shown in figure. Match the foll...

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  6. Match the following

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  7. Match the following

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  8. If earth decreases its rotational speed without changing other factors...

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  9. Match the following columns. (for a satellite in circular orbit) {:(...

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  10. The orbital angular momentum of a satellite revolving at a distance r ...

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  11. The diameters of two planets are in the ratio 4:1 and their mean densi...

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  12. A mass is taken to a height R from the surface of earth and then is gi...

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  13. The density of the core of a planet is x and that of outer shell is y....

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  14. Energy required to launch a satellite of mass m from earth's surface i...

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  15. A body is projected vertically upwards from the surface of earth with ...

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  16. Pertaining to two planets, the ratio of escape velocities from respect...

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  17. Two particles of equal masses m go round a circle of radius R under th...

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  18. Energy of a satellite in circular orbit is E(0). The energy required ...

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  19. An artificial satellite is moving in a circular orbit around the earth...

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  20. A solid sphere of radius R and mass density rho is surrounded by anoth...

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