Question

A planet revolves in an elliptical orbit around the sun. The semi-major and minor axes are a and b, then the time period is given by:

Options

• T² ∝ b³

• `"T"^2 ∝ (("a" + "b")/2)^3`

• T² ∝ a³

• `"T"^2 ∝ (("a" - "b")/2)^3`

Answer 1

T² ∝ a³

Explanation:

By Kepler's third law