Lesson: Chapter 5 — Optics

5.4. Lenses 2 of 4 Reset answers

Clear all your answers?

This erases every answer in this set and starts you again at question one. Your score will be gone.

Type these four numbers to confirm:

Those numbers don't match. Look at them again and type them.

Yes, clear Keep them

Question 2

A lens with both surfaces curving outwards is…

A plano-concave B bi-concave C plano-convex D bi-convex

The right answer is the one marked above.

Bi-convex. Plano-convex has only one convex surface, the other flat.

Answer the question to continue.