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NEET Physics Mathematical Tools, Units & Dimensions Question Bank Units

  • question_answer
    If \[x=at+b{{t}^{2}}\], where \[x\] is the distance travelled by the body in kilometres while \[t\] is the time in seconds, then the units of b are                                                           [CBSE PMT 1993]

    A)       \[km/s\]                    

    B)       \[km-s\]

    C)       \[km/{{s}^{2}}\]  

    D)      \[km-{{s}^{2}}\]

    Correct Answer: C

    Solution :

                            \[[x]=[b{{t}^{2}}]\Rightarrow [b]=[x/{{t}^{2}}]=km/{{s}^{2}}\]


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