Question

Give notes on 'sign convention of spherical lens'.

Answer 1

Answer:

The sign convention of spherical lenses are: All distance are measured from the optical center of the lens. The distance measured in the same direction as that of incident light are taken as positive and the distance measured against the direction of incident light are taken as negative.

Explanation:

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Answer 2

Answer is in the attachment.

These are my own notes, hope this will help you!