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