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10th Class Science Light - Reflection and Refraction Question Bank Light - Reflection and Refraction

  • question_answer
    A concave mirror is made by cutting a portion of a hollow glass sphere of radius 24 cm. Find the focal length of the mirror.

    A) 24 cm                                  

    B) 12 cm                  

    C) 6 cm                                     

    D) 18 cm

    Correct Answer: B

    Solution :

    \[f=\frac{\text{Radius of curvature}}{2}=\frac{24}{2}=12\,cm\]


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