The scale of a tilted photograph of focal length f, taken from an alt – McqOptions

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1.	The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is
A.	f/H sec θ
B.	f sec θ/H
C.	f/H
D.	f/H cos ½θ
Answer» C. f/H

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