Question

What is the power in diopters of a camera lens that has a 50.0 mm focal length?

a) 0.02 D
b) 0.04 D
c) 0.06 D
d) 0.08 D

Answer 1

The power of a camera lens with a 50.0 mm focal length is 20 D.

Step-by-step explanation:

The power of a lens in diopters is given by the formula P = 1/f, where f is the focal length of the lens in meters.

To convert the focal length from millimeters to meters, we divide it by 1000.

Therefore, the power of a camera lens with a 50.0 mm focal length can be calculated as follows:

P = 1/(50.0 mm / 1000) = 1/0.05 m = 20 D

So, the power of the camera lens is 20 D.