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Assertion : In a semiconductor, the cond...

Assertion : In a semiconductor, the conduction electrons have a higher mobility than holes.
Reason: The electrons experience fewer collisions.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reasonb is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Assertion is true but reason is false.
Assertion is correct in the sense that the free electrons occupy a single energy band. But a band has a distribution of energy. One can treat assertion as correct. But the reason is false because electrons in a metal follow Pauli's exclusion preinciple. It is because of this, one different bands. Therefore the answer is.
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