Question

Write the sign convention for spherical lenses.​

Answer 1

Answer:

Explanation:

Sign Convention for Spherical Lenses:

For lenses, we follow sign conventions, similar to the one used for spherical mirrors. All

measurements are taken from the optical centre of the lens which lies on the origin of x-y

axis. According to the convention, the focal length of a convex lens is positive and that of a

concave lens is negative. We must take care to apply appropriate signs for the values of u, v,

f, object height h and image height h′.

Answer 2

Explanation:

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