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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Germanium is a semi conductor in which the energy gap between adjacent band is sufficiently small for thermal energy to be able to promote a small number of electrons from the full valence band to conduction band.

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