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in Physics by (74.3k points)

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 the earth. When both ‘d’ and ‘h’ are much smaller than the radius of earth, then which one of the following is correct?

(a) d =3h/2

(b) d = h/2

(c) d = h

(d) d =2 h

1 Answer

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Best answer

Correct option: (d) d =2 h

Explanation:

Variation of g with altitude is,

variation of g with depth is,

Equating h g and d g , we get d = 2h

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