α and β are the angles subtended by a point of elevation h at their – McqOptions

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1.	α and β are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being S and f respectively. Parallax displacement of the point due to relief, is
A.	[A].
B.	[B].
C.	[C].
D.	.
Answer» D. .

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