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7th Class Science Light Question Bank Electricity And Light

  • question_answer
    Radius of curvature of a concave mirror is 8 cm. What is the focal length  the concave mirror?

    A) 8 cm                            

    B) 4 cm

    C) 16 cm  

    D)        20 cm

    E) None of these

    Correct Answer: B

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