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NEET Sample Paper NEET Sample Test Paper-10

  • question_answer
    The diameter of a wire is measured with a screw gauge having 50 divisions on circular scale and by one complete rotation of circular scale, main scale moves\[0.5mm\]. If rolling of screw gauge is\[0.250cm\]. The minimum percentage error in the reading will be:

    A)  \[0.4\]                         

    B)  \[0.8\]

    C)  4                                

    D)  5

    Correct Answer: A

    Solution :

    Least count of screw gauge \[\frac{0.5}{50}=0.01\,mm\] Percentage error in diameter             \[\frac{0.01}{2.50}\times 100\,\,=0.4%\]


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