If ‘f’ is the focal length of the camera lens and ‘θ’ is the – 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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