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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
$\begin{array}{ll}\text { (i) } t^{1 / 2} & \text { (ii) } t \\ \text { (iii) } t^{3 / 2} & \text { (iv) } t^2\end{array}$
$\begin{array}{ll}\text { (i) } t^{1 / 2} & \text { (ii) } t \\ \text { (iii) } t^{3 / 2} & \text { (iv) } t^2\end{array}$
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$v=u+$ at $=0+a t=a t$
Power $=P=F \times v=m a \times a t=m a^2 t$
$\because \mathrm{m}$ and a are constants, $P \propto t \therefore$ Ans (ii)
Power $=P=F \times v=m a \times a t=m a^2 t$
$\because \mathrm{m}$ and a are constants, $P \propto t \therefore$ Ans (ii)
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