How is the object distance measured in the sign convention for spherical lenses?

Question

How is the object distance measured in the sign convention for spherical lenses? — Exam MCQ

rrbjepyq.in · Accepted Answer

D. It is measured from the optical center towards the position of the object. — The correct choice is It is measured from the optical center towards the position of the object.. It follows from the laws of reflection/refraction and the standard image-formation properties of lenses, mirrors or optical systems.

rrbjepyq.in · Answer

A. It is measured from the focal point towards the position of the object.

rrbjepyq.in · Answer

B. It is measured from the optical center towards the position of the image.

rrbjepyq.in · Answer

C. It is measured from the focal point towards the position of the image.

How is the object distance measured in the sign convention for spherical lenses?

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