Question

Which of the following represents a convex lens? A. +f B. -di C. -f D. +di

Answer 1

F is the focal length of the lens. A positive f indicates a converging optical device, like a convex lens or a concave mirror.

Choice A

Answer 2

Answer:

(A).+f

Explanation:

Convex lens :

Convex lens is thicker at the center and thinner at the edges.

The lens which is converging it is called convex lens.

The parallel light ray pass through the lens then the light rays converges on one point that point is called focal length.

The focal length of the convex lens is positive.

So, +f represents the focal length of Convex lens.

Hence, This is the required solution.

Answer 3

+f
Apex no
Cap