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  3. 10th Class
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  5. Light - Reflection and Refraction

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

  • question_answer
    It is desired to produce a real image on a screen using a convex lens of focal length 10 cm. The minimum distance between the object and the screen should be

    A)  20cm

    B)  40cm  

    C)  100cm

    D)  the real image is obtained at all distances

    Correct Answer: B

    Solution :

     In a convex lens, minimum distance between) object and its real image is \[4f\]'(when the object at\[2f\]).


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