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NEET 2010 (AIPMT, Mains) · Acceleration Due to Gravity

Acceleration Due to Gravity question from NEET 2010 (AIPMT, Mains)

Q122NEET 2010 · AIPMT · MAINSEasy

Acceleration Due to Gravity

The dependence of acceleration due to gravity g on the distance r from the centre of the earth, assumed to be a sphere of radius R of uniform density is as shown in figures below

The correct figure is

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Answer: (a)

Inside ( $r < R$ ): $g \propto r$ , a straight line from the origin.
Outside ( $r > R$ ): $g \propto \frac{1}{r^2}$ , a falling curve; peak at $r = R$ .
Figure (4) shows exactly this shape.
So the answer is (a) figure (4).

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