JEE Main & Advanced Sample Paper JEE Main Sample Paper-29

  • question_answer
    If mass of an element is \[5.74\,gm\] and its volume is \[1.2\,c{{m}^{3}}\]. Its density will be :

    A) \[4.783\,g/c{{m}^{3}}\]

    B) \[4.78\,g/c{{m}^{3}}\]

    C) \[4.7\,g/c{{m}^{3}}\]

    D) \[4.8\,g/c{{m}^{3}}\]

    Correct Answer: D

    Solution :

    \[2h=a(t_{1}^{2}\,+{{t}_{2}}^{2})\] Since least no. of significant figure in m and v is two. Hence d = 4.8 (Using round off)

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