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EAMCET Medical EAMCET Medical Solved Paper-1999

  • question_answer
    The width of forbidden gap in silicon crystal is 1.1 eV. When the crystal is converted into n- type semiconductor the distance of Fermi level from conduction band is:

    A)  greater than 0.55 eV     

    B)  equal to 0.55 eV

    C)  lesser than 0.55 eV        

    D)  equal 1.1 eV

    Correct Answer: B

    Solution :

                     The width of forbidden gap in silicon crystal is 1.1 eV. Then, in the crystal converted to \[n-\]type the distance of Fermi level from conduction band is 0.55 eV.


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