According to Kepler, the period of revolution of a planet ( T ) and its mean distance from the sun ( r ) are related by the equation

Options

A. `T^(2)r`= Constant
B. `T^(2)r^(-3)=` Constant
C. `T^(2)r^(3)="Constant"`
D. `T^(3)r^(3)=` Constant

Answer

b

Explanation

`T^(2)=(4pi^(2))/(GM)r^(3)`
`(T^(2))/(T^(3))=(4pi^(2))/(GM)="constant"`
`T^(2)r^(-3) = "constant."`