MCQs on Semiconductor Physics

MCQs on Semiconductor Physics

University

25 Qs

quiz-placeholder

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MCQs on Semiconductor Physics

MCQs on Semiconductor Physics

Assessment

Quiz

Physics

University

Practice Problem

Hard

Created by

Vishwajeet Sharma

Used 2+ times

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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Intrinsic semiconductors are:

Pure semiconductors

Doped with impurities

Insulators

Conductors

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Fermi level in intrinsic semiconductors lies:

Near the conduction band

In the middle of the energy gap

Near the valence band

Outside the band gap

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Electrons and holes recombine in semiconductors releasing:

Sound energy

Light

Magnetic energy

Chemical energy

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mobility of electrons is defined as:

Velocity × electric field

Current density / electric field

Drift velocity / electric field

Charge × resistance

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Mobility of charge carriers depends on

temperature

nature of charge carriers

purity of substance

none of them

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Drift current occurs due to:

Concentration gradient

Electric field

Temperature gradient

Photon absorption

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a p-n junction, the depletion region has:

Free charge carriers

Ions only

Holes only

Electrons only

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