A Geo-stationary satellite bits around the earth in a circular of radius 36, 000 km then what will be the time period of a spy satellite orbiting a few hundred km above the earth's surface (R_("earth") = 6400 km)

A Geo-stationary satellite bits around the earth in a circular of radi

1.	A Geo-stationary satellite bits around the earth in a circular of radius 36, 000 km then what will be the time period of a spy satellite orbiting a few hundred km above the earth's surface (R_("earth") = 6400 km)
Answer» (a) `1/2` (B) 1 (C) 2 (d) 4 Solution :`(T_(2))/(T_(1)) =((a_(2))/(a_(1)))^(3/2) rArrT_(2)=24((6400)/(3600))^(3/2) = 2 ` HOURS