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In extrinsic semiconductors

(a) The gap between conductivity band and valance band is $ 10^2\; ev $

(b) The gap between conductivity band and valance band is $10\; ev$

(c)The gap between conducting band and valance band is about $ev$

(d)The conductivity band and valance band overlap

Can you answer this question?
 
 

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In extrinsic semiconductor the gap between conductivity band and valance band is about $ 1\;ev$
Hence c is the correct answer.
answered Jan 31, 2014 by meena.p
 
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