If f is the focal length of the camera lens and θ is the angle of til – McqOptions

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1.	If f is the focal length of the camera lens and θ is the angle of tilt, the distance of the plumb point from the principal point will be
A.	f sin θ
B.	f cos θ
C.	f tan θ
D.	f sec θ.
Answer» D. f sec θ.

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