Question

Focal length formula for plano convex lens..

Answer 1

Answer:

To find focal length of a Plano-concave lens use the lens maker's formula: 1/f=(n-1)[(1/R1)-(1/R2)]. R1 is radius of curvature of the surface on the object side. In case of Plano concave lens take it negative.

Explanation:

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