Question

The correct expression for finding the period of a planet revolving around the Sun is

Answer 1

The time period of a planet(T) is related with the radius of the orbit(r) as,

`T^2=(4\pi^2r^3)/(GM_s)`
`M_s\text{ is the mass of the Sun}`

G is the gravitational constant.

hence, option C means the 3rd option is correct.