Question

What is lens maker formula ? Write about the terms ?

Answer 1

Answer:

A lens formula may be defined as the formula which gives the relationship between the distance of image (v), distance of object (u), and the focal length (f) of the lens. It may be written as: Principal Axis Concave Lens. Where, v = Distance of image from optical centre of lens

Answer 2

$\boxed{ \frac{1}{f} = (n - 1)( \frac{1}{R} - \frac{1}{r} )}$

→f = focal length

→1/f = power of lens

→R = radii of curvature of first. lens

→r = radii of curvature of second lens

→n = refractive index of lens