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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 - Reflection and Refraction

  • question_answer
    What is focal length?

    A) The distance from the light source to the image

    B) The distance from the object to the centre of the lens

    C) The distance from the image to the centre of the lens

    D) The distance from the focal point to the centre of the lens

    Correct Answer: D

    Solution :

    Focal length is the distance from the focal point to the centre of the lens.


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