The change in the value of ' 
' at a height ' 
' above the surface of the earth is the same as at a depth 'd' below the surface of the earth. When both ' 
' and ' 
' are much smaller than the radius of earth, then which one of the following relation is correct?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Variation of 
with altitude is, 
; variation of 
with depth is, 
Equating 
and 
, we get 
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