Solved papers for JEE Main & Advanced JEE Main Paper (Held On 12 April 2014)

done JEE Main Paper (Held On 12 April 2014) Total Questions - 1

• question_answer1) For LED's to emit light in visible region of electromagnetic light, it should have energy band gap in the range of:   [JEE Main Online Paper ( Held On 12 Apirl  2014 )
  A)
  eV to 0.4 eV                      
  done clear
  B)
  0.5 eV to 0.8 eV
  done clear
  C)
  0.9 eV to 1.6 eV               
  done clear
  D)
  1.7 eV to 3.0 eV
  done clear
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