If the earth suddenly charges its radius x times the present value, the new period of rotation would be

If the earth shrinks such that its density becomes 8 times to the present values, then new duration of the day in hours will be

If the earth shrinks such that its density becomes 8 times to the present values, then new duration of the day in hours will be

If earth radius reduces to half of its present value then the time period of rotation will become:

If earth radius reduces to half of its present value then the time period of rotation will become:

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

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