JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions Question Bank Mock Test - Units Dimenstions and Measurment

  • question_answer
    The respective number of significant figures for the numbers 23.023, 0.0003, and 2.1 x \[10_{{}}^{-3}\] are

    A) 5, 1, 2  

    B) 5, 1, 5

    C) 5, 5, 2  

    D) 4, 4, 2

    Correct Answer: D

    Solution :

    [d] \[[x]=[Ay]=[B]=>[y]=[B/A]\] Also, \[[x]\ne [A]\]and \[[cz]\]= dimensionless \[\Rightarrow [C]=[{{Z}^{-1}}]\]


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