Question

How does a concave lens differ from a convex lens?

• A. A convex lens is another way to describe a plane mirror whereas a concave lens is curved at the centre.
• B. A concave lens is curved inward on both sides whereas a convex lens is curved only on one side.
• C. A convex lens has a thick center and thin edges whereas a concave lens has a thin center and thicker edges.
• D. A convex lens has a thin center and thick edges whereas a concave lens has a thick center and thinner edges.

Answer 1

The correct option is C A convex lens has a thick center and thin edges whereas a concave lens has a thin center and thicker edges.

As we can see from the image, a convex lens is thick at the centre and thin at the edges.