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.

MCQ's Test For PPSC Physics Topic 7 Modern Physics

Try The MCQ's Test For PPSC Physics Topic 7 Modern Physics

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PPSC Physics Topic 7 Modern Physics

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Question # 1

When transistor works as an amplifier, its output is.

Question # 2

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

Question # 3

When Photon incident on a metal produce the emission of electrons the process is called.

Question # 4

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

Question # 5

The absorption of X-rays in a given material follows.

Question # 6

Sub atomic paticles whihc does not experience strong nuclear force are.

Question # 7

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.

Question # 8

The energy equivalent of 1 kg of matter a

Question # 9

X-rays spectrum may be

Question # 10

In potential for the material of cathode pure metals are rarely used because of their

Question # 11

Mean life of a radioactive sample is 100 s its half life will be

Question # 12

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

Question # 13

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

Question # 14

What are isotopes.

Question # 15

The most readily fissionable isotope of uranium has atomic mass of

Question # 16

Which one of the following has the largest wavelength.

Question # 17

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

Question # 18

The result of the alpha particle scattering experiment gave evidence for which of the following.

Question # 19

Which one of the following spectra series is in the ultraviolet region.

Question # 20

Choose the one which acts as single inverter.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Neutrino9 is a particle with
A. Charge less property and has no spin
B. Charge less property and has spin
C. Charge less like electron and has spin
D. The same property as neutron
2 When an electron and a positron are annihilated, then number of protons produced is.
A. 1
B. 2
C. 3
D. 4
3 Which is the famous standard model of the universe.
A. the big bang
B. Casmos
C. Astronaut
D. The small stap
4 An oscillator is basically an amplifier with loop gain
A. Zero
B. Less than unity
C. More than unity
D. Infinity
5 The molecular weight of D2O is
A. 16
B. 18
C. 20
D. 24
6 The chain reaction is controlled by a series of rods usually made of.
A. uranium
B. Cadimium
C. Boron
D. Steel
7 Half life and mean lifetime of a radioactive element are.
A. Equal to each other
B. Inversely proportional to each other
C. Directly proportional to each other
D. Not related to each other
8 Which of the following is its own anti particle.
A. Photon
B. Electron
C. Proton
D. positron
9 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
10 When Photon incident on a metal produce the emission of electrons the process is called.
A. Photo electric effect
B. Pair production
C. x-rays production
D. Gama ray production

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