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A convex lens has a focal length of 25 cm. What is the power of the lens? (2021)

Practice Questions

1 question
Q1
A convex lens has a focal length of 25 cm. What is the power of the lens? (2021)
  1. +2 D
  2. +4 D
  3. +6 D
  4. +8 D

Questions & Step-by-step Solutions

1 item
Q
Q: A convex lens has a focal length of 25 cm. What is the power of the lens? (2021)
Solution: Power (P) = 1/f (in meters). Thus, P = 1/0.25 = +4 D.
Steps: 0

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