Which of the following graphs represents the motion of the planet moving about the Sun. T is the periode of revolution and r is the average distance (from centre to centre) between the sun and the planet

Options

A.
B.
C.
D.

Answer

a

Explanation

`T^(2) prop r^(3)" "therefore" "T^(2)=kr^(3)`
`y=mx`
The graph is a straightline passing through origin.