Question

establish Lens Maker Formula

Answer 1

hey mate
1/f=1/v-1/u


hope it may help you

Thank you

Answer 2

hey frnd....
If R1, R2 are the radius of curvatures of the lens, ‘n’ is the absolute refractive index then
$1 \div f = (1 - n)(1 \div r1 - 1 \div r2)$

known as the Lens-Maker’s formula.

HOPE THIS HELP YOU ☺☺❤❤❤❤❤