Solved papers for JEE Main & Advanced JEE Main Paper (Held on 7 May 2012)

done JEE Main Paper (Held on 7 May 2012) Total Questions - 1

• question_answer1) A particle gets displaced by\[\Delta \over line{r}=\left( 2\hat{i}+3\hat{j}+4\hat{k} \right)m\]under the action of a force\[\vec{F}=\left( 7\hat{i}+4\hat{j}+3\hat{k} \right).\]The change in its kinetic energy is     JEE Main Online Paper (Held On 07 May 2012)
  A)
  38 J                                        
  done clear
  B)
                         70J
  done clear
  C)
                         52.5 J                    
  done clear
  D)
                         126 J
  done clear
  View Answer play_arrow