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

The operational amplifier is______________?

A. A high gain amplifier

B. A high-power amplifier

C. A high resistance amplifier

D. A low resistance amplifier

The alternating voltage is an example of_______________?

A. A digital waveform

B. An analogue waveform

C. Discrete waveform

D. None at all

The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?

A. The light emitting diodes

B. Photo diodes

C. Photo voltaic cell

D. Solar cells.

The device used for conversion of D.C. to A.C. is called______________?

A. Converter

B. A rectifier

C. Inverter

D. Oscillator

In half-wave rectification the output D.C. voltages is obtained across the load for_______________?

A. The negative half cycle of A.C.

B. The positive half cycle of A.C.

C. The positive and negative half cycles

D. Either positive or negative half of A.C.

In full wave rectification the output D.C. voltage across the load is obtained for_____________?

A. The positive half cycle of input A.C.

B. The negative half cycle of input A.C.

C. The complete cycle of input A.C.

D. All of the above.

In the transistor schematic symbol, the arrow______________?

A. is located on the emitter

B. is located on the base

C. is locate on the collector

D. points form north to south

The semiconductor diode can be used as a rectifier because _______________?

A. It has low resistance to the current flow when forward biased & high resistance when reverse biased.

B. It has low resistance to the current flow when forward biased.

C. It has high resistance to the current flow when reverse biased

D. Its conductivity increases with rise of temperature.

In the transistor schematic symbol, the arrow_______________?

A. is located on the emitter

B. is located on the base

C. is locate on the collector

D. points form north to south

Thermions are________________?

A. protons

B. positrons

C. electrons

D. photons

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