Q. The power of a convex lens is +2.5. Then its focal length is

  • (A) 20 cm
  • (B) 50 cm
  • (C) 30 cm
  • (D) 40 cm
✅ Correct Answer: (D) 40 cm

Published by Ram Sharma ⭐ 193.88K Points at 09-Mar-2022 05:38 pm in Physics

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