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Question

Assertion :The resistivity of a semi-conductor increases with temperature. Reason: The atoms of semi-conductor vibrate with larger amplitude at higher temperatures thereby increasing its resistivity.
  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Both Assertion and Reason are incorrect

A
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
B
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
Solution
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The resistivity of semiconductor decreases with increase in temperature as more electrons jump into conduction band increasing its conductivity.

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