Physics MCQs: Most Important Questions for Exams

McqsTestz.com has uploaded a comprehensive collection of Physics MCQs covering a wide range of topics including mechanics, thermodynamics, electromagnetism, optics, modern physics, waves, fluids, and more. Perfect for students preparing for exams such as matriculation, intermediate, competitive tests, Lecturer and university-level assessments.

Physics MCQs

Which one of following band is completely filled in case of conductors ?

A. Conduction band

B. Fermi band

C. Valence band

D. Forbidden band

Depletion region of a junction is formed_____________?

A. during the manufacturing process

B. under forward bias

C. under reverse bias

D. when temperature varies

The simplest type of rectification known as half wave rectification is obtained by____________________?

A. using a transistor

B. suppressing the harmonics in A.C voltage

C. suppressing half wave of A.C supply by using diode

D. using a Coolidge tube

In p-n-p transistor the collector current is________________?

A. equal to emitter current

B. slightly less than emitter current

C. greater than emitter current

D. any of above

Semi-conductors with donor atoms and free electrons belong to the type________________?

A. n

B. p

C. mix

D. any of above

The especially designed semiconductor diodes used as indicator lamps in electronic circuits are___________?

A. The switch

B. The light emitting diode

C. The photo diodes

D. Solar cells.

The device or circuit used for conversion of A.C. into D.C. is called_______________?

A. An amplifier.

B. A rectifier

C. Filtering circuit

D. Converter.

Non-inverting amplifier circuits have____________?

A. A very high input impedance

B. A very low input impedance

C. A low output impedance

D. None of the above

The operation of a transistor requires______________?

A. That the emitter be heated

B. That the base be heated

C. That the collector be heated

D. None of the above

To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?

A. 2

B. 3

C. 4

D. 5

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