" Or Derive the lens maker's formula "

Derive th lens maker's formula.

A. a convex lens a. is thicker at the edges than at the middle. b. is thicker at the middle than at the edges. c. Diverges rays of light. d. is of uniform thickness everywhere. B. with the help of a ray diagram sketch the image formation of a convex lens when the object is between C and F. C. Derive the lens maker's formula.

Deduce the lens maker's formula.

By giving assumptions made, derive the lens maker formula for a double convex lens.