Electronic Devices Question 245
Question: Assertion : The resistivity of a semiconductor increases with temperature. Reason : The atoms of a semiconductor vibrate with larger amplitude at higher temperature there by increasing it’s resistivity.
[AIIMS 2003]
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: D
Solution:
Resistivity of semiconductors decreases with temperature.
The atoms of a semiconductor vibrate with larger amplitudes at higher temperatures there by increasing it’s conductivity not resistivity.
