A lens has a refractive power of -1.50.What is its focal length?
A) 150 cm
B) -150 cm
C) 67.0 cm
D) -67.0 cm
E) 8.50 cm

Name: A lens has a refractive power of -1.50.What is its focal length? A) 150 cm B) -150 cm C) 67.0 cm D) -67.0 cm E) 8.50 cm
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The refractive power (P) of a lens is given by the formula P = 1/f, where f is the focal length in meters. A refractive power of -1.50 means f = -1/1.50 = -0.6667 meters, which is -66.67 cm, approximately -67.0 cm.

A Lens Has a Refractive Power of -1