Question

the time period of an artificial satellite in a circular orbit of radius R is 2 days and its orbital velocity is v0. If time period of another satellite in a circular orbit is 16days then,
(a)its radius of orbit is 4R and orbital velocity is v0.
(b)its radius is 4R and orbital velocity is v0/2.
(c)its radius of orbit is 2R and orbital velocity is v0.
(d)its radius of orbit is 2R and orbital velocity is v0/2.

Answer 1

I think answer b is correct