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  • Light - Reflection and Refraction
  • Calculate the power of a concave lens whose focal length ...
Multiple choice

Calculate the power of a concave lens whose focal length is 4 m.

    • 0.25 D
    • 0.125 D
    • 0.5 D
    • 8 D
  1. 0.25 D

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The power of the given lens = 1/f = 1/- 4 = - 0.25 D

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