Question

The focal length of a lens whose power is -1.5 D is
A) -66.66 cm
B) +1.5 m
C) +66.66 cm
D) -1.5 m
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Answer 1

Answer:-66.66 cm

-ve sign denotes that the focal length is infront of the lens

Explanation:

Answer 2

Question:-

The focal length of a lens whose power is -1.5 D is

A) -66.66 cm

B) +1.5 m

C) +66.66 cm

D) -1.5 m

Answer:-

C) +66.66 cm