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	What do we study by crystallography.	A. The analysis of X ray spectra of elements and study of crystal structure. B. Visible spectra of sources and crystal study C. Ultraviolet spectra of sources and crystal study D. Characteristics of X-rays
2	When of the following radiations are not emitted by electron transitions in atoms.	A. Visible rays B. Ultraviolet rays C. Infrared radiations D. Alpha particles
3	Which of the following is basic transistor configuration.	A. CB B. CC C. CE D. All of these
4	From which radiation it is most difficult to protect oneslelf.	A. Alpha radiation B. Beta radiation C. Gama radiation D. Heat radiation
5	Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.	A. Attraction of nucleus B. Collision with nuclei C. Interactions with electrons D. Electrostatic repulsion by the nucleus
6	In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.	A. Atomic nuclei may contain neutrons B. Atoms are electrically neutral C. Atoms are largely empty space D. Atoms have positively charged nuclei
7	In a cloud chamber the Alpha particles leave	A. Dense, straight and continuous tracks B. Only straight and continuous tracks C. Thin and discontinuous tracks D. Irregular tracks
8	In an electronic transition atom cannot emit	A. Gama rays B. Visible rays C. Infrared rays D. Ultraviolet rays
9	The radius of second orbit of hydrogen atom is	A. 0.071 A B. 0.142 A C. 4.752 A D. 9.5298 A
10	The force that bonds protons and neutrons together int he nucleus despite the electrical repulsion of the protons is called.	A. Molecular force B. Nuclear force C. Atomic force D. Gravitational force

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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

Which of the following properties is not exhibited by X-rays.

Though the wavelength of X-rays is smaller than that of visible light yet the speed of X-rays in vacuum is.

The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.

The relationship between mass number atomic number and neutron number is.

The continuous X rays spectrum is due to an effect.

In a transistor which one is very thin.

A freshly made sample of radioactive material gives a count rate of 8,000 counts per minute After twenty days it gives a count rate of 500 counts per minute What is the half life of the materials.

Which of the following radiations can penetrate 20 cm thick steel.

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

In a fission reactor which particle causes a uranium -235 nucleus to split.

The path of Gama rays in Wilson cloud chamber is

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

Deuterium is

Which quantity remains fixed in isobars.

The nucleus of tritium is called.

The critical mass of a fissionable material is.

Photocells are used for

When objects placed in a room are exposed to X- rays they appear

Why is a capacitor resistor combination used in oscillators in grid circuit.

The process of pair production will take place if the energy of photon is greater than.

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Set 13

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Set 15

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Set 17

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Set 19

Set 20

Set 21

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PPSC Physics Chapter 7 Important MCQ's

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