Question

# 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=h2
B
d=3h2
C
.d=2h
D
d=h
Solution
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#### The value of gravity at a height h above earth's surface is given bygh=g(1−2hR)and at a depth d is given by gd=g(1−dR)Since these two values are same, we can see that d=2h

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