The acceleration due to gravity near the surface of a planet of radius \( R \) and density \( d ...

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The acceleration due to gravity near the surface of a planet of radius \( R \) and density \( d \) is proportional to
(a) \( \frac{d}{R^{2}} \)
(b) \( d R^{2} \)
(c) \( d R \)
(d) \( \frac{d}{R} \)
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