| ASSERTION: The resistivity of a semi-conductor increases with temperature. |
| REASON: The atoms of a semi-conductor vibrate with larger amplitude at higher, temperatures, thereby increasing its resistivity. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: D
Solution :
Resistivity of a semi conductor decreases with the temperature. The atoms of a semi conductor vibrate with larger amplitudes at higher temperatures there by increasing its conductivity not resistivity.
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