A doctor has prescribed a corrective lens of power +2 D. What is the focal length of the lens?

(Hint: Power of lens (P) = 1/f )

Question

A doctor has prescribed a corrective lens of power 2 D What is the focal length of the lens Hint Power of lens P 1f

Accepted Answer

Power of lens P 1f P 2 D f 12 05 m A convex lens has a positive focal length Therefore it is a convex lens or a converging lens

NCERT Solutions Class 10 Science Solutions for Light Reflection and Refraction - Exercise 10.5 in Chapter 10 - Light Reflection and Refraction