Question

According to Kepler's third law of orbital periods, average distance $\left(r\right)$ of a planet from the Sun is related to the planet's orbital time period $\left(T\right)$ as:

• A. $r\propto T$
• B. $r^3\propto T^2$
• C. $r^3\propto T$
• D. $r\propto T^2$

Answer 1

The correct option is B $r^3\propto T^2$

According to Kepler's third law of orbital periods, average distance $\left(r\right)$ of a planet from the Sun is related to the planet's orbital time period $\left(T\right)$ as:
$r^3\propto T^2$