Question

Doctor has prescribed a lens having power +1.5D. What will be the focal length of the lens? What is the type of the lens and what must be the defect of vision?

Answer 1

P=1/f

Focal length of the lens is + 0.67 m. The prescribed lens is converging type in nature.

Answer 2

convex lens and defect is hypermetopia and focal length is2/3 m.......
I hope help u