Question

An eye is corrected by a -5.50-d lens, which is 2.0 cm from the eye. (a) Is this eye near- or farsighted? (b) What is this eye's far point without glasses?

Answer 1

The eye is nearsighted and its far point without glasses is approximately -18.18 cm.

Step-by-step explanation:

According to the given information, the eye is corrected by a -5.50-d lens, which means it has a negative optical power, indicating that the person is near-sighted. This lens is located 2.0 cm from the eye.

To determine the eye's far point, we can use the formula:

Far point = 100 / Optical power

Using the given -5.50-d lens, the far point would be:

Far point = 100 / (-5.50) = -18.18 cm

Therefore, this eye's far point without glasses is approximately -18.18 cm.