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Energy Band Diagrams

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Question

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than $2480 n m$ is incident on it The forbidden band gap for the semiconductor is

A

0.9 e V

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B

0.7 e V

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C

0.5 e V

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D

1.1 e V

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Solution

The correct option is C $0.5 e V$

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