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The distance of two planets from the sun...

The distance of two planets from the sun are `10^(13) and 10^(12)` m respectively. The ratio of the periods of the planet is

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A `T^(2) prop R^(3) " " `….(By Kepler.s third law )
` :. " " (T_(1)^(2))/(T_(2)^(2)) = (R_(1)^(3) )/(R_(2)^(3))`
` :. (T_(1)^(2))/(T_(2)^(2)) = [ (10^(13))/(10^(12))] `
` :. " " [ (T_(1))/(T_(2))] ^(2) = 10^(3)`
` :. " " (T_(1))/(T_(2)) = (10sqrt(10))/1 `
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