Q99 / 180 · NEET 2016 (Phase 2) · Physics

Starting from the center of the earth having radius, $R$ , the variation of $g$ (acceleration due to gravity) is shown by

A
Correct answer
B
C
D

Solution

$g_{in} = \frac{G M r}{R^{3}} \Rightarrow g_{in} \propto r$ .

$g_{out} = \frac{G M}{r^{2}} \Rightarrow g_{out} \propto \frac{1}{r^{2}}$ .

Hence, the correct answer is option: 'B'.

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