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Q#1
Semiconductor Physics
GATE EC 2025
MCQ
+2 marks
-0.66 marks
The intrinsic carrier concentration of a semiconductor is 
at 300 K.
If the electron and hole mobilities are 
and 
, respectively, then the intrinsic resistivity of the semiconductor (in 
) at 300 K is _________.
(Charge of an electron 
.)
1.65
1.65
0.85
1.95
Explanation:
Intrinsic Carrier Concentration, 
Hence, option (B) is correct.
Alternate Solution:
charge of electron (magnitude)
intrinsic carrier concentration
mobility of holes
mobility of electrons
Upon substitution,
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