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SSC General Science & Technology Sample Paper NCERT Sample Paper-1

  • question_answer
    On heating a circular metallic disc with a circular hole at the centre, the diameter of the hole will:

    A)  Decrease

    B)  Remain the same

    C)  Increase

    D)  First increase, then decrease

    Correct Answer: C

    Solution :

    [c] A hole in a material behaves just like a circle of that same material. It expands on heating.


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