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Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationKepler's LawEasy2 minPYQ_2018

PhysicsEasysingle choice

Average distance of the earth from the sun is $L_{1}$ . If one year of the earth $= D$ days, one year of another planet whose average distance from the sun is $L_{2}$ will be

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Solution:

According to Kepler's third law, $T^{2} \propto r^{3}$ or $T \propto r^{3/2}$ $∴ \frac{D ^{'}}{D} = (\frac{L _{2}}{L _{1}})^{3/2}$ or $D^{'} = D (\frac{L _{2}}{L _{1}})^{3/2}$ days

Stream:AIIMSSubject:PhysicsTopic:GravitationSubtopic:Kepler's Law

⏱ 2mℹ️ Source: PYQ_2018

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