Semiconductor Electronics Materials Devices And Simple Circuits Ques 67
67. At absolute zero, $Si$ acts as
[1988]
(a) non-metal
(b) metal
(c) insulator
(d) none of these
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Answer:
Correct Answer: 67.(c)
Solution:
- (c) Semiconductors are insulators at room temperature.
At absolute zero temperature (OK) conduction band of semiconductor is completely empty i.e., $\sigma=0$. So semiconductor behaves as an insulator.
BETA
