Your nearsighted instructor cannot focus clearly on objects more distant than 150 cm from her eyes.What power lenses are required for her to see distant students clearly?
A)1.5
B)0.15
C)0.67
D)-0.67
E)-1.5

Question

Quizplus · Accepted Answer

Since the nearsighted instructor cannot focus clearly on objects more distant than 150 cm from her eyes, a negative power lens is required. Using the formula P = -1/d (where d is the distance in meters), we can find the power of the lens needed. P = -1/1.5 = -0.67. Therefore, the answer is D.

Your Nearsighted Instructor Cannot Focus Clearly on Objects More Distant