Solved papers for JEE Main & Advanced JEE Main Solved Paper-2016

done JEE Main Solved Paper-2016 Total Questions - 2

• question_answer1) A particle of mass m is moving along the side of a square of side 'a', with a uniform speed u in the x-y plane as shown in the figure : Which of the following statement is false for the angular momentum \[\vec{L}\] about the origin ? [JEE Main Solved Paper-2016 ]
  A)
  \[\vec{L}=\frac{m\upsilon }{\sqrt{2}}R\hat{k}\]when the particle is moving from D to A
  done clear
  B)
  \[\vec{L}=-\frac{m\upsilon }{\sqrt{2}}R\hat{k}\] when the particle is moving from  to B
  done clear
  C)
   \[\vec{L}=m\upsilon \left[ \frac{R}{\sqrt{2}}-a \right]\hat{k}\]when the particle is moving from C to D
  done clear
  D)
  \[\vec{L}=m\upsilon \left[ \frac{R}{\sqrt{2}}+a \right]\hat{k}\]when the particle is moving from B to C
  done clear
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• question_answer2) A roller is made by joining together two cones at their vertices O. It is kept on two rails AB and CD which are placed asymmetrically (see figure), with its axis perpendicular to CD and its centre O at the centre of line joining AB and CD (see figure). It is given a light push so that it starts rolling with its centre O moving parallel to CD in the direction shown. As it moves, the roller will tend to :- [JEE Main Solved Paper-2016 ]
  A)
  turn left and right alternately.
  done clear
  B)
  turen left.
  done clear
  C)
  turn right.                           
  done clear
  D)
   go straight.
  done clear
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