Q. A lens has a power +2.0 D. The type of lens and its focal length will be
A) Convex, 0.5 m
B) Concave, -0.5 m
C) Convex, -0.5 m
D) Concave, 0.5 m
✔ Correct Answer: Convex, 0.5 m
Exam Insight
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A) Convex, 0.5 m
B) Concave, -0.5 m
C) Convex, -0.5 m
D) Concave, 0.5 m
✔ Correct Answer: Convex, 0.5 m
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