According to Kepler, the period of revolut

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

A

${T^3}{r^3} = $ constant

B

${T^2}{r^{ - 3}} = $ constant

C

$T{r^3} = $ constant

D

${T^2}r = $ constant

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

$\frac{{{T^2}}}{{{r^3}}} = $ constant

$ \Rightarrow \,{T^2}{r^{ - 3}}$= constant