A geostationary satellite is orbiting the earth at a height of 5R above that surface of the earth, R being the radius of the earth. The time period of another satellite in hours at a height of 2R from the surface of the earth is
5
10
C.
A spherical planet has a mass Mp and diameter Dp. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity, equal to
4GMp/Dp2
GMpm/Dp2
GMpm/ Dp2
GMpm/ Dp2
A.
4GMp/Dp2
The height at which the weight of a body becomes 1/16th, its weight on the surface of earth (radius R), is
5R
15 R
3R
3R
C.
3R
An alternating electric field of frequency v is applied across the dees (radius =R ) of a cyclotron that is being used to accelerate protons (mass = m). The operating magnetic field (B) used in the cyclotron and the kinetic energy (K) of the proton beam, produced by it are given by
C.