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If the focal length of a lens is doubled, how does the power of the lens change?

Practice Questions

1 question
Q1
If the focal length of a lens is doubled, how does the power of the lens change?
  1. Doubles
  2. Halves
  3. Remains the same
  4. Quadruples

Questions & Step-by-step Solutions

1 item
Q
Q: If the focal length of a lens is doubled, how does the power of the lens change?
Solution: Power is inversely proportional to focal length. If f is doubled, P = 1/f will halve.
Steps: 0

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