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Question: Answered & Verified by Expert
A lens of focal power $0.5 D$ is
PhysicsRay OpticsJEE Main
Options:
  • A A convex lens of focal length $0.5 \mathrm{~m}$
  • B A concave lens of focal length $0.5 \mathrm{~m}$
  • C A convex lens of focal length $2 \mathrm{~m}$
  • D A concave lens of focal length $2 \mathrm{~m}$
Solution:
2668 Upvotes Verified Answer
The correct answer is: A convex lens of focal length $2 \mathrm{~m}$
$P=\frac{1}{f} \Rightarrow f=\frac{1}{0.5}=2 m$

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