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    Physics
    Grade-10
    Easy

    Question

    The radius of curvature of a convex lens whose focal length is 34 cm is ____ cm.

    hintHint:

    We know that, for a convex lens, 2 cross timesFocal length = (Radius of curvature)
     

    The correct answer is: 68

      The radius of curvature of a convex lens whose focal length is 34 cm is 68 cm.
      • In a convex lens, the radius R is equal to twice the focal length.
      • The radius can be calculated by the formula R= 2f
      • When the R is 34 cm, the radius is 2 X 34= 68 cm.

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