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JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions Question Bank Self Evaluation Test - Physical World, Units and Measurements

  • question_answer
    If \[L=2.331cm,\,\,B=2.1cm,\]then \[L+B=\]

    A) 4.4cm              

    B)  4cm

    C)  4.43cm            

    D)  4.431cm

    Correct Answer: A

    Solution :

    [a] \[L+B=2.331+2.1\cong 4.4cm\] Since minimum significant figure is 2.


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