Question

The distances of two planets from the sun are 10^13 and 10^12 m respectively find the ratio of time periods and the speed of two planets

Answer 1

Answer:

Distance of two planets from sun, r1 = 1013m and r2 = 1012m. Relation between time period (T) and distance of the planet from the sun is T2 ∝ r3 or T ∝ r3/2. Therefore T1/T2 = (r1/r2)3/2 = (1013/1012)3/2 = 103/2 = 10√10.