A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into an orbit of radius 4R. The ratio of their respective periods is

A satellite is launched into a circular orbit of radius R around the e

1.	A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into an orbit of radius 4R. The ratio of their respective periods is
Answer» `4:1` `1:8` `8:1` `1:4` SOLUTION :`T_1= KR^(3/2) , T_2 = K(4R)^(3/2)` `T_2 = K(8) R^(3/2)` `(T_1)/(T_2) = (KR^(3/2))/(8KR^(3/2)) = 1/8 impliesT_1 : T_2 = 1:8`