JEE PHYSICS MCQ: GRAVITATION

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If a planet of given density were made larger its force of attraction for an object on its surface would increase because of planet’s greater mass but would decrease because of the greater distance from the object to the centre of the planet. Which effect predominate?

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Correct option: A

Increases in mass

Option A (Increases in mass) is correct because the force of attraction increases linearly with mass but decreases with the square of the radius. The increase in mass dominates.

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