A little known fact is that both Robinson Crusoe and Friday wore eyeglasses. As it so happens, Robinson Crusoe was farsighted while Friday was nearsighted. Whose eyeglasses did they use
Whenever they wanted to start a fire by focusing the sun's rays?
A) Robinson Crusoe's
B) Friday's
C) Both would work equally well.
D) Both actually worked, but Friday's was a little bit better.
E) Neither's worked, but fortunately they were in possession of matches.

Question

Quizplus · Accepted Answer

Farsighted individuals require convex lenses to correct their vision, which can also concentrate sunlight to start a fire. Nearsighted individuals use concave lenses, which disperse light and cannot be used for this purpose.

A Little Known Fact Is That Both Robinson Crusoe and Friday