PPSC Physics Topic 7 MCQ Test With Answer

Prepare Modern Physics and all other important topics with PPSC Physics online test. Modern Physics is a term that is used to describe all the discoveries and observations that made physicists rethink their understanding of Physics in the 19th and 20th centuries. In this day and age, one can't study Physics without having a firm understanding of concepts of Modern Physics. That’s why seekers for PPSC Physics jobs need to understand the subject of Modern Physics. Examiners ask many questions from this topic in the PPSC Physics test.

To make the PPSC exam preparation easier for you, team IlmKiDunya.com has created the PPSC Physics online test portal. On this page, you can attempt the PPSC online test MCQs about Modern Physics. Many students complain that they don’t find information about the PPSC Physics exam preparation. We at IlmKiDunya.com bring PPSC online test to your fingertips so you can prepare quickly for the test.

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PPSC Physics Chapter 7 Important MCQ's

Sr.#	Question	Answer
1	The reciprocal of decay constant lamda of a radioactive element is.	A. Half life B. Mean life C. Total life D. Curie
2	What are isotopes.	A. Atoms of the same element with different numbers of neutrons. B. Atoms of the same element with different numbers of protons. C. Atoms which are radioactive D. Atoms which have gained or lost an electron
3	The most convenient unit for energy at the atomic level is.	A. Joule B. Watt second C. Newton metre D. Electron volt
4	The electrons behave as wave because.	A. They can be diffracted by a crystal B. They can be defecting by magnetic field C. They can be deflecting by electric field D. they can produce ions in gases
5	Which six particles and their antiparticles interact by the weak interaction.	A. Leptons B. Hadrons C. Muons D. pi mesons
6	Which type of amplifier causes minimum drain of power supply.	A. Class -A B. Class -B C. Class-C D. Class -AB
7	Radioactivity is the phenomenon associated with the.	A. Transition of radiowaves B. production of alpha particles only C. Decay of nucleus D. Reception of radio waves
8	The energy that must be added to separate the nucleus is called.	A. Critical energy B. Binding energy C. Gravitational energy D. Electrostatic energy
9	An increase in frequency above threshold frequency results in.	A. Increase in photo electric current B. Increase in K.E. of electrons C. Decrease in photoelectric current D. Decreases in K.E. of electrons
10	On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.	A. Target material B. Accelerating voltage C. Filament temperature D. Separation between target and the filament

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PPSC Physics Topic 7 MCQ Test With Answer

MCQ's Test For PPSC Physics Topic 7 Modern Physics

PPSC Physics Topic 7 Modern Physics

In Compton's effect the change in wavelength of a scattered photon is called.

Which of the following propagates at the same speed as velocity of light.

Which six particles and their antiparticles interact by the weak interaction.

A device used to determine mass of an isotope quite accurately is known as.

The unit generally used for measuring astronomical distances is.

The unit of Rydberg constant R is

During transition, atom cannot emit

Radio carbon in the atmosphere is produced by the bombardment of.

Beta decay may occur by

In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.

Which type of amplifier causes minimum drain of power supply.

The critical mass of a fission reaction is.

One particle having zero mass and zero charge is.

The energy delivered to the tissue per unit mass is called the absorbed dose of.

The phenomenon in which a photon of frequency 'f' is scattered by an electron and the scattered photon has frequency f <f is known as.

An operational amplifier have how many input terminals.

A single quantum of electromagnetic radiation is termed as.

When a posirtron is emitted it causes.

48 days after the receipt the amount of iodine -131 left behind is only.

The particles equal in mass or greater than protons are called.

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Set 17

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Set 21

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PPSC Physics Chapter 7 Important MCQ's

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