Solved papers for JEE Main & Advanced JEE Main Online Paper (Held On 23 April 2013)

done JEE Main Online Paper (Held On 23 April 2013) Total Questions - 2

• question_answer1)                 This question has Statement-1 and Statement -2. Of the four choices given after the Statements, choose the one that best describes the two Statements.                 Statement 1: Very large size telescopes are reflecting telescopes instead of refracting telescopes.                 Statement 2: It is easier to provide mechanical support to large size mirrors than large size lenses.     [JEE Main Online Paper ( Held On 23  April 2013 )
  A)
                   Statement1 is true and Statement 2 is false.
  done clear
  B)
                                           Statement1 is false and Statement2 is true.
  done clear
  C)
                                          Statement1 and Statement 2 are true and Statement 2 is correct explanation for Statement 1.
  done clear
  D)
                                           Statement 1 and Statement 2 are true and Statement 2 is not the correct explanation for Statement 1.               
  done clear
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• question_answer2) A light ray falls on square glass slab as shown in the diagram. The index of refraction of the glass, if total internal reflection is to occur at the vertical face, is equal to:     [JEE Main Online Paper ( Held On 23  April 2013 )
  A)
  \[\left( \sqrt{2}+1 \right)/2\]                                    
  done clear
  B)
  \[\sqrt{\frac{5}{2}}\]
  done clear
  C)
  \[\frac{3}{2}\]                                  
  done clear
  D)
  \[\sqrt{\frac{3}{2}}\]
  done clear
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