A) Silicon
B) Cuprous oxide
C) Germanium
D) Galium arsenide
Correct Answer: C
Solution :
The width of the forbidden gaps of silicon, germanium, cuprous oxide, galium arsenide are\[1\text{ }eV,\text{ }0.71\text{ }eV,\text{ }1.4\text{ }eV\] and 1.43 eV respectively. It is also known that the substances having smaller forbidden gap, hence, it has more conductance.
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