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  3. 8th Class
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8th Class Science Light Question Bank Light Conceptive Objective Problems

  • question_answer
    The focal length of concave mirror is -40 cm. Its radius of curvature is

    A)  -20 cm                 

    B)  +20 cF

    C)  -80 cm            

    D)  +80 cm

    Correct Answer: C

    Solution :

      Not Available    


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