Physics
Grade-10
Easy

Question

The radius of curvature of a concave lens is - 100 cm. Its focal length is - ____ cm.

hintHint:

  • Focal length = R over 2

The correct answer is: 50


    • Focal length = R over 2
    • So f=fraction numerator negative 100 over denominator 2 end fraction equals negative 50 space c m

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