Solved papers for JEE Main & Advanced JEE Main Paper (Held On 9 April 2014)

done JEE Main Paper (Held On 9 April 2014) Total Questions - 2

• question_answer1) The mid points of two small magnetic dipoles of length d in end-on positions, are separated by a distance x, (x >> d). The force between them is proportional to \[{{x}^{-n}}\] where n is:   [JEE Main Online Paper ( Held On 09 Apirl  2014  )
  A)
  1                                             
  done clear
  B)
  2
  done clear
  C)
  3                                             
  done clear
  D)
  4
  done clear
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• question_answer2) The magnetic field of earth at the equator is approximately \[4\times {{10}^{-5}}T.\]The radius of earth is \[6.4\times {{10}^{6}}m.\] Then the dipole moment of the earth will be nearly of the order of:   [JEE Main Online Paper ( Held On 09 Apirl  2014  )
  A)
  \[{{10}^{23}}A{{m}^{2}}\]                            
  done clear
  B)
  \[{{10}^{20}}A{{m}^{2}}\]
  done clear
  C)
  \[{{10}^{16}}A{{m}^{2}}\]                            
  done clear
  D)
  \[{{10}^{10}}A{{m}^{2}}\]
  done clear
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