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	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
2	Current gain of a CE amplifier is 50, ITS hfe is about	A. 25 B. 50 C. 75 D. 100
3	A factory buy 100 g of a radioactive chemical with a half life of 5 years which decays to a stable compound How much of the chemical will still be radioactive 10 years time.	A. 25 g B. 50 g C. 75 g D. 100 g
4	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
5	Radius of the Bother's orbit is r the radius of second orbit will be.	A. 2 r B. 3 r C. 4 r D. 8 r
6	A single quantum of electromagnetic radiation is termed as.	A. Compton B. Photon C. Hyperon D. Meson
7	How positives feedback will effect an amplifier.	A. Increases the voltage gain B. Decreases the voltage gain C. Imitates oscillation to occur D. Damaged it
8	The value of principal quantum number for an ionized atom is.	A. 13.6 eV B. 27.2 eV C. 54.4 eV D. 100 eV
9	In a transistor which one is very thin.	A. Collector B. Emitter C. Base D. Depletion region
10	The SI unit of radioactivity is.	A. Becquerl B. Curie C. Joule D. rutherford

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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 energy equivalent of 1 kg of matter a

Which uranium isotope having the atomic weights as given below is easily fissionable.

Transistor are made from

Compton scattering experiment seemed to indicate that radiation had

As oscillator is basically an amplifier with loop gain

Alpha particles emitted from a radioactive material are.

In annitilation of matter, positron and electron pair disappears into two

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

Which of the following are electromagnetic waves.

In the fusion process, there are

The part of theory of relativity which deals with accelerated bodies is called.

The gama rays have

An active component of an electronic circuit consisting of a small block of semiconducting material to which at least three electrical contacts are made is known as.

X-rays are absorbed maximum by

If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.

How much large is the proton mass than the electron mass.

In de Brogile model electron orbit must form

Which of the following is basic transistor configuration.

The critical mass of a fissionable material is.

The radius of first Bohr's orbit for hydrogen atom is.

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

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Set 7

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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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