Question

Water lens is made of double convex lens of radius of curvature R. Write lens maker's formula for water lens

Answer 1

Answer:

P (lens) = ((n lens -n_0))/n_o  x (1/R - 1/R1)

Explanation:

Lens maker formula for water lens is given as

P (lens) = ((n lens -n_0))/n_o  x (1/R - 1/R1)

Here, n lens in the refractive index of lens which is water and

N o is the refractive index of surrounding medium

For a double convex lens the radius R is positive since it is measured from the front surface and extends right to the center of curvature. The radius R1 is negative since it extends left from the second surface