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If radius of earth is reduced to half wi...

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

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The correct Answer is:
(A)R,(B)S,(C)Q
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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"):}

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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?

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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 the radius of earth is reduced to 2%, keeping mass constant, then weight of the body on its surface