Work, Energy & Power · JEE Main previous year questions

2005 2 questions

1. Q882005 · 28 Apr 2005 · Shift 1

   A body of mass $m$ is accelerated uniformly from rest to a speed $v$ in a time $T$. The instantaneous power delivered to the body as a function of time is given by

   1. A.$\frac{m{v}^2}{T^2}\cdot t^2$
   2. B.$\frac{m{v}^2}{T^2}\cdot t$
   3. C.$\frac{1}{2}\frac{m{v}^2}{T^2}\cdot t^2$
   4. D.$\frac{1}{2}\frac{m{v}^2}{T^2}\cdot t$
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   Answer: B

2. Q982005 · 28 Apr 2005 · Shift 1
   
   1. A.$\sqrt{3}v$
   2. B.$v$
   3. C.$\frac{v}{\sqrt{3}}$
   4. D.$\frac{2}{\sqrt{3}}v$
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   Answer: D