Question

question 23 of 25
which optical device can focus light to a point through refraction?
a b c d
a. d
b. c
c. b
d. a

Explanation:

A convex lens (which is thicker in the middle than at the edges) can focus light to a point through refraction. In the given options, option C represents a convex lens. Concave lenses (like option B) diverge light. Options A and D are not standard lenses that focus light to a point through refraction in the way a convex lens does.

Answer:

B. C