Q. The focal length of a lens is 50 centimetre. Its power is

  • (A) 50 dioptre
  • (B) 1 dioptre
  • (C) 10 dioptre
  • (D) 2 dioptre
✅ Correct Answer: (D) 2 dioptre

Published by Brijesh Goswami ⭐ 9.45K Points at 26-Mar-2022 07:23 pm in Physics

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