Question

define optic center​

Answer 1

Answer:

a point on the axis of a lens that is so located that any ray of light passing through it in passing through the lens suffers no net deviation and that may be within, without, or on either surface of the lens.

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Answer 2

Answer:

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A divergent lens has a focal length of20 cm. At what distance should an. object of height 4 cm from the optical centre of the lens be placed so that its image is formed 10 cm away from the lens. Find the size of the image also.