why doesn't refraction happen when a light ray passes from air to a lens( along its principle axis)

Asked by sakshi.eashan | 13th Oct, 2008, 01:57: PM

Expert Answer:

The principle axis is perpendicular to the axis of the lens and the point where they meet is called the optic center. Any ray passing through the optic center , passes undeviated.

Answered by  | 13th Oct, 2008, 06:27: PM

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