A

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Q. The focal length of the lens in a photographic camera is 5 cm. What is the power of the lens?

  • (A) + 5 D
  • (B) + 10 D
  • (C) + 15 D
  • (D) + 20 D
  • Correct Answer - Option(D)
  • Views: 318
  • Filed under category Physics

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