Question

With the help of a ray diagram, explain the following terms:
(a) Focus of a convex lens (b) Optical centre of a convex lens (C) Focal length of a convex lens​

Answer 1

1. (a) ️ you can see the eye the Ray can form with the candle the inverse proportion of a candle
2. in the mid point the Ray can form the add the convex lens
3. convex lens is a drawing a focal length