The time taken by Mars to revolve round the sun is 1.88 years. Find the ratio of average distance between mars and the sun to that between the earth and the sun.

Answer

A, B

Explanation

According to Keler's laws of planetary motion
`T^2 alpha R^3`
`rarr (T_m^2)/(T_3^2)=(R_(ms)^3)/ (R_(es)^3)`
`rarr(Rms)/(Rm)=1.88/1`
`:. (Rm)/R_(es) =(1.88)^(2/3)=1.52`