Two satellites of mass m and 9m are orbiting a planet in orbits of radius R. Their periods of revolution will be in the ratio of [KCET 2011]

As we know,From Kepler's law, time period of satellite is  T2=4π2R3GMTsat =2π(R+h)2GMeAs two satellites of masses m and 9m are orbiting a planet of radius R, their time periods will remain same, i.e. in the ratio 1 : 1, because time period of satellite does not depend on its mass.