Question

Define and explain sign convention for spherical lenses ,​

Answer 1

Answer:

The sign convention of spherical lenses are: All distance are measured from the optical centre 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.

Answer 2

Answer:

The sign convention of spherical lenses are: All distance are measured from the optical centre 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.