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Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationMiscellaneousMedium3 minQB

PhysicsMediumsingle choice

Two completely different planets X and Y are each composed of the same material. The planet Y has radius twice as large as that of X. The ratio of the gravitational acceleration $g_{y}$ at the surface of Y to the gravitational acceleration $g_{x}$ at the surface of X is given by :-

Options:

Answer:

Solution:

$g = \frac{GM}{R ^{2}} = \frac{4}{3} π GρR \Rightarrow g \propto R$ (same material).

$R_{Y} = 2 R_{X} \Rightarrow \frac{g _{Y}}{g _{X}} = 2$ - option (C).

Stream:JEESubject:PhysicsTopic:GravitationSubtopic:Miscellaneous

⏱ 3mℹ️ Source: QB

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