NEET Sample Paper NEET Sample Test Paper-90

  • question_answer
    A body is initially at rest. It undergoes one- dimensional motion with constant acceleration. The power delivered to it at time t is proportional to:

    A) \[{{t}^{1/2}}\]

    B)                    \[t\]

    C) \[{{t}^{3/2}}\]            

    D)         \[{{t}^{2}}\]

    Correct Answer: B

    Solution :

    [b] Power =F.v.=m.a.v = ma.at [v= u+ at, v= at (u= 0)] \[=m{{a}^{2}}t\] As a and m are constant hence. Power \[\alpha \] t


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