New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

      The radii of curvature of the faces of a double

    convex lens are 20 cm and 30 cm. If focal length of the lens is 36 cm find the refractive index of the material of the lens?
    A 1.33 cm Correct Answer Incorrect Answer
    B 1.2 cm Correct Answer Incorrect Answer
    C 1.5 cm Correct Answer Incorrect Answer
    D 1.7 cm Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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