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Physics · GRAVITATION
हिन्दीAs one moves along a straight path from the centre of the Earth (treated as a uniform solid sphere) out to infinity, the acceleration due to gravity:
Correct answer · Option 4
Increases linearly up to the Earth's surface and then decreases inversely with the square of the distance.
Explanation
Inside the Earth, \( g(r) = \frac{G M_E}{R_E^3} r \propto r \) (linear increase to maximum at surface), and outside, \( g(r) = \frac{G M_E}{r^2} \propto \frac{1}{r^2} \).
