Solved papers for JEE Main & Advanced JEE Main Paper (Held On 11 April 2014)

done JEE Main Paper (Held On 11 April 2014) Total Questions - 2

• question_answer1) A body of mass 5 kg under the action of constant force \[\overset{\to }{\mathop{F}}\,={{F}_{x}}\hat{i}+{{F}_{y}}\hat{j}\]has velocity at\[t=0s\]as\[\overset{\to }{\mathop{v}}\,=\left( 6\hat{i}-2\hat{j} \right)m/s\]and at t = 10s as \[\overset{\to }{\mathop{v}}\,=+6\hat{j}\,m/s.\] The force \[\overset{\to }{\mathop{F}}\,\]is:   [JEE Main Online Paper ( Held On 11 Apirl  2014 )
  A)
  \[\left( -3\hat{j}+4\hat{j} \right)N\]
  done clear
  B)
  \[\left( -\frac{3}{5}\hat{i}+\frac{4}{5}\hat{j} \right)N\]
  done clear
  C)
  \[\left( 3\hat{i}-4\hat{j} \right)N\]                          
  done clear
  D)
  \[\left( \frac{3}{5}\hat{i}-\frac{4}{5}\hat{j} \right)N\]
  done clear
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• question_answer2) The average mass of rain drops is \[3.0\times {{10}^{-5}}\]kg and their average terminal velocity is 9 m/s. Calculate the energy transferred by rain to each square metre of the surface at a place which receives 100 cm of rain in a year.   [JEE Main Online Paper ( Held On 11 Apirl  2014 )
  A)
  \[3.0\times {{10}^{5}}J\]                              
  done clear
  B)
  \[4.05\times {{10}^{4}}J\]
  done clear
  C)
  \[3.0\times {{10}^{5}}J\]                              
  done clear
  D)
  \[9.0\times {{10}^{4}}J\]
  done clear
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