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NEET UG PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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Understanding +4 | -1

Given below are three statements.

A. At absolute zero, Si acts as a perfect insulator.

B. When p-n junction diode is forward biased, both the thickness of depletion region and the barrier height are increased.

C. Order of energy band gap of C, Si and Ge is

(\mathrm{E})_{\mathrm{C}}>(\mathrm{E})_{\mathrm{Si}}>(\mathrm{E})_{\mathrm{Ge}}.

Choose the correct answer from the options given below.

View answer and explanation

Correct option: D

Only A & C are correct

Only A & C are correct because statement B is incorrect; forward biasing decreases the depletion region and barrier height.

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A    0   0   1   1
B    0   1   0   1
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