To see his full height, Blinky Bill who is 1 meter tall needs a mirror that is at least
A)0.33 m tall.
B)0.50 m tall.
C)0.75 m tall.
D)1 m tall.
E)depends on distance from the mirror.

Question

Quizplus · Accepted Answer

To see his full height in a mirror, a person (or in this case, Blinky Bill) only needs a mirror that is half his height. This is because the angle of incidence equals the angle of reflection, allowing the top and bottom of Blinky Bill to be seen in a mirror that is half his height, which is 0.50 m. Distance from the mirror does not affect the minimum height needed for the mirror.

To See His Full Height, Blinky Bill Who Is 1