1.

For a satellite to orbit around the earth, which of the following must be true ? (a) It must be above the equator at some time (b) It cannot pass over the poles at any time (c) Itsheight above the surface cannot exceed 36,000 km (d) Its period of rotation must be gt 2pisqrt(R//g)

Answer»

only B & C are TRUE
a & d are true
a, b & c are true
only, b, c & d are true

ANSWER :B


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