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 SI unit of radioactivity is.	A. Becquerl B. Curie C. Joule D. rutherford
2	In the Geiger Marsden experiment a narrow beam of alpha particles was fired at a thin piece of Gold foil in a vacuum Some of the particles were scattered though large angles The result of the experiment provided evidence for the existence of.	A. A very small charged nucleus B. electrons orbiting the nucleus C. Neutrons in the nucleus D. Nuclear reaction
3	Mean life of a radioactive sample is 100 s its half life will be	A. 0.693 s B. 1 s C. 6.93 s D. 69.3 s
4	The SI unit of current gain is.	A. Ampere B. Ampere metre C. Ampere volt D. It has no unit
5	The maximum K.E. with which photoelectrons are emitted depends very strongly on the.	A. Intensity of incident light B. Electric field near the photocathode C. Frequency of incident light D. Polarization of incident light
6	The charge on a helium nucleus is equal to the charge of.	A. Two electrons B. Two protons C. Two neutrons D. One proton
7	An oscillator is basically an amplifier with loop gain	A. Zero B. Less than unity C. More than unity D. Infinity
8	There are how many modes of operations of a BJT.	A. 2 B. 3 C. 4 D. 5
9	Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.	A. mouse B. Cat C. Dog D. Rabbit
10	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

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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

Nuclear force exists between

In heavy elements of the periodic table the number of neutrons than protons are.

Photocells are used for

Among different elements of the periodic table which of the following atoms is the simplest.

In a photocell, certain metals emit electrons for

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

Which is the famous standard model of the universe.

White light a tungsten filament lamp is passed through sodium vapor and viewed through a diffraction gritting Which of the following best describes the spectrum which would be seen.

Nuclear force as compared to electrostatic force is.

Which of the following has greatest binding energy per nucleon.

LED is a p-n junction that emits

An Alpha particle is the same as

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

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

Which of the following phenomenon cannot be understood by quantum theory.

The reciprocal of decay constant lamda of a radioactive element is.

In a nuclear reactor chani reaction is controlled by introducing.

How many terminals does a BJT have.

The radius of second orbit of hydrogen atom is

Which particle interact via all fundamental forces.

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

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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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