First slide

Variation of g

Question

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 B as shown in figure given ahead :

Easy

A
B
C
D

Solution

Inside the earth $g \propto r$ and Outside the earth $g \propto \frac{1}{r^{2}}$ .

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