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Band gap in germanium is small. The en...

Band gap in germanium is small.
The energy spread of each germanium atomic energy level is infinitesimally small.

A

If both assertion and reason are correct and reason is correct explanation for assertion

B

If both assertion and reason are correct but reason is not correct explanation for assertion

C

If assertion is correct but reason is incorrect

D

If both assertion and reason are incorrect

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The correct Answer is:
B
Correct Explanation Germanium is a semi conductor since the energy gap between the adjacent bands is small, As a result, electrons are promoted from filled valence band to empty conduction band. This leaves both bands partially filled and germanium conducts electricity
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