A. metals are harder than the semiconductor
B. while the resistance of metals decreases with temperature, the reverse is the case for semiconductor
C. the resistance of metals increases with temperature, while for semiconductors, it is the reverse
D. metals have forbidden gaps while semiconductors have not
Correct Answer:
Option C – the resistance of metals increases with temperature, while for semiconductors, it is the reverse
Explanation
Experiment shows that an increase in temperature increases the resistance of a pure metal but decreases the resistance of pure semiconductor
