Question

what are the sign convention of spherical lens​

Answer 1

Answer:

The distances measured against the direction of incident light are taken as negative. The distances measured upward and perpendicular to the principal axis are taken as positive. The distances measured downwards and perpendicular to the principal axis is taken as negative

Explanation:

Answer 2

Answer:

All the distances are measured from the optical center of the lens. The distances measured in the same direction as that of incident light are taken as positive. The distances measured against the direction of incident light are taken as negative

Explanation:

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