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

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PPSC Physics Topic 7 Modern Physics

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Question # 1

The continuous X rays spectrum is due to an effect.

Question # 2

The best shield against Gama rays would be of

Question # 3

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

Question # 4

Which particle has zero charge and zero rest mass.

Question # 5

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

Question # 6

The phenomenon of Compton's effect process that right has

Question # 7

Which one of the following is a convenient energy unit to express the energy of sub atomic particles.

Question # 8

Hydrogen bomb is based on

Question # 9

In a nuclear reactor chani reaction is controlled by introducing.

Question # 10

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.

Question # 11

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

Question # 12

X-ray are

Question # 13

Which experiment confirmed the de Broglie hypothesis.

Question # 14

The energy of neutrons obtained during a fission reaction is.

Question # 15

The SI unit of current gain is.

Question # 16

Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.

Question # 17

Two electrons approach each other their relative velocity will be.

Question # 18

Which temperature is required for the fusion of two nuclides.

Question # 19

A solid state detector is basically

Question # 20

What are isotopes.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The half life of a radioactive element depends upon.
A. Temperature
B. pressure
C. nature of element
D. quantity of the element
2 Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.
A. Simultaneously
B. Mass variation
C. time dilation
D. Length contraction
3 The path of electron in Rutherford atomic model according to classical theory a.
A. Parabolic
B. Straight line
C. Spiral
D. Circular
4 Which of the following wavelength lies in X-rays region.
A. 1 A
B. 100 A
C. 1,000 A
D. 10,000 A
5 The result of the alpha particle scattering experiment gave evidence for which of the following.
A. Nuclear fusion
B. Radio active decay
C. Existence of isotopes
D. Nuclear atom
6 The nucleus of tritium is called.
A. Proton
B. Triton
C. Deuleron
D. Positron
7 Which of the following is believed to be carrier o nuclear forces.
A. Lepton
B. Meson
C. Bason
D. Baryon
8 Which one of the following has the largest wavelength.
A. x rays
B. Infrared rays
C. Visible light
D. Radio waves
9 When using the formula E = h lambda what unit should energy have.
A. Joule
B. Watt second
C. Newton metre
D. Electron volt
10 The half life of a radioactive substance as compared to its mean lif eis.
A. 30%
B. 50%
C. 70%
D. 90%

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