High School

What is the power of a concave mirror (in diopters) located in air with a radius of curvature of 20 cm?

A. -5.00 D
B. -10.00 D
C. +10.00 D
D. +5.00 D

Answer :

Final answer:

The power of a concave mirror with a radius of curvature of 20 cm is +5.00 D.

Therefore, the correct answer is d. +5.00 D.

Explanation:

The power of a concave mirror can be determined using the formula:

Power of concave mirror = 2/R

where R is the radius of curvature of the mirror.

In this case, the radius of curvature is 20 cm, so the power of the concave mirror is:

Power = 2/20 = 0.10 D

Therefore, the correct answer is d. +5.00 D.