The dependence of acceleration due to gravity on the distance r from the centre of the earth assumed to be a sphere of radius R of uniform density is as shown figure below .
(i) 
(ii) 
(iii) 
(iv) 
The correct figure is.
Text Solution
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The acceleration due to gravity at a depth d below the surface of earth is
….. (i)
Where R – d = r = distance of locations form the centre of the earth. When r = 0, g` = 0
From (i) g 
r till R = r, for which g` = g
For r > R, 
Here, R + h = r
Therefore, the variation of g with distance r from centre of earth will be as shown in figure (4).Thus,
options is correct.
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