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	Which of the following phenomenon cannot be understood by quantum theory.	A. Photo electric effect B. Compton effect C. X-Rays production D. Interference
2	The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is.	A. Directly proportional to n B. Directly proportional to n2 C. Inversely proportional to n D. Inversely proportional to n2
3	A solid state detector is basically	A. A reverse biased p-n junction B. A forward biased p-n junction C. A p-n -p transistor D. A n-p-n transistor
4	In a fission reactor which particle causes a uranium -235 nucleus to split.	A. Alpha particle B. Gama ray C. Neutron D. Proton
5	Cs - 137 is a radioisotope used ot determine the thickness of the walls of steel pipes Cs 137 is chosen because it emits	A. Radiowaves B. Alpha particles C. Beta particles D. gama particles
6	The electron behave an waves because	A. They can be diffracted by a crystal B. They can produce ions in gases C. They can be deflected by magnetic field D. They can be deflected by electric field
7	The possible values of principal quantum number are.	A. only zero B. 0,1,2,...................7 C. 1,2,3........................8 D. 2,3,4,6...............10
8	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
9	Transistor stands for	A. Transfer of resistance B. Transfer of current C. Transfer of power D. Transfer of voltage
10	A gama ray of energy 1900 MeV is absorbed by	A. Proton antiproton pair B. Electron positron pair C. Producing heat in the substance D. The orbit

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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

The term used for the emission of electrons when light strikes a surface.

The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.

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

Which particle interact via all fundamental forces.

What will be excitation energy in the third orbit of hydrogen atom.

The usefulness of X rays is largely due to their

Induced fission result from the absorption of

The total energy of an electron in an orbit around the nucleus is.

X-rays travel with

The resistance between(+) and (-) inputs of an amplifier is.

Cosmic rays mostly comprise of

When light of particular frequency is allowed to fall upon a metal surface electrons are emitted from a these emitted electrons are called.

In which reaction two or more small light nuclei nuclei come together or fuse to form a large nucleus.

What is the basic advantage of class A operation of an amplifier.

The critical mass of fissionable uranium -235 can be reduced by

When a beta particle travels though a medium it knocks out electrons from the atoms due to.

What is the overall gain, if three amplifiers each with a gain of 30 are cacaded.

the gain of an amplifier is independent of

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

The scientific theory concerning the coming into existence of universe.

Prepare Complete Set Wise PPSC Physics Topic 7 Modern Physics MCQs Online With Answers

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Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Set 18

Set 19

Set 20

Set 21

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PPSC Physics Chapter 7 Important MCQ's

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