Solved papers for JEE Main & Advanced JEE Main Paper (Held On 11 April 2015)

done JEE Main Paper (Held On 11 April 2015) Total Questions - 2

• question_answer1) In a Young's double slit experiment with light of wavelength\[\lambda \]the separation of slits is d and distance of screen is D such that \[D>>d>>\lambda .\]If the Fringe width is \[\beta ,\] the distance from point of maximum intensity to the point where intensity falls to half of maximum intensity on either side is : [JEE Main Online Paper (Held On 11 April 2015)]  
  A)
  \[\frac{\beta }{2}\]
  done clear
  B)
  \[\frac{\beta }{4}\]
  done clear
  C)
  \[\frac{\beta }{3}\]
  done clear
  D)
  \[\frac{\beta }{6}\]
  done clear
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• question_answer2) Unpolarized light of intensity in is incident on surface of a block of glass at Brewster's angle. In that case, which one of the following statements is true? [JEE Main Online Paper (Held On 11 April 2015)]  
  A)
   transmitted light is partially polarized with intensity \[{{I}_{0}}/2.\]
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  B)
    transmitted light is completely polarized with intensity less than \[{{I}_{0}}/2.\]
  done clear
  C)
     reflected light is completely polarized with intensity less than \[{{I}_{0}}/2.\]
  done clear
  D)
     reflected light is partially polarized with intensity \[{{I}_{0}}/2.\]
  done clear
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