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Q.

The change in the value of g at a height h above the surface of the earth is the same as at a depth d below the surface of earth. When both d and i are much smaller than the radius of the earth, then which of the following is correct ?

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a

d=h2

b

d=3h2

c

d = 2h

d

d = h

answer is C.

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Detailed Solution

We know that, gh=g1−2hR……………….(1)and gd=g1−dR…………………………….(2)∴ g1−2hR=g1−dR or  2h=d
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