Question

a material changes from normal to semiconductor state below _____ temperature
a)fermi
b)weiss
c) critical
d) curie
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Answer 1

Explanation:

At lower temperatures, carriers move more slowly, so there is more time for them to interact with charged impurities. As a result, as the temperature decreases, impurity scattering increases, and the mobility decreases. This is just the opposite of the effect of lattice scattering.