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 phenomenon of Compton's effect process that right has

Question # 2

What is the relativistic version of the Schrodinger equation.

Question # 3

The most abundant isotope of neon is.

Question # 4

The wavelength of X-rays is of the ofder of.

Question # 5

Which of the following wavelength lies in X-rays region.

Question # 6

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

Question # 7

During transition, atom cannot emit

Question # 8

The energy of neutrons obtained during a fission reaction is.

Question # 9

In de Brogile model electron orbit must form

Question # 10

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

Question # 11

An oscillator is basically an amplifier with loop gain

Question # 12

The band width of an audio amplifier is.

Question # 13

A gama ray of energy 1900 MeV is absorbed by

Question # 14

Which of the following radiations can penetrate 20 cm thick steel.

Question # 15

From which radiation it is most difficult to protect oneslelf.

Question # 16

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

Question # 17

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 # 18

The Compton effect in X-rays proves that

Question # 19

Beta decay may occur by

Question # 20

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

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The reciprocal of decay constant lamda of a radioactive element is.
A. Half life
B. Mean life
C. Total life
D. Curie
2 Critical mass is the minimum mass needed for
A. Fusion
B. H-Bomb
C. Chain reaction
D. Binding energy
3 The path of Gama rays in Wilson cloud chamber is
A. Irregular
B. Dense and straight
C. Thin and continuous
D. Thin and discontinuous
4 The energy equivalent of 1 kg of matter a
A. 10-15 J
B. 1 J
C. 1012J
D. 1017 J
5 Which of the following atom pair have the same structure.
A. N, C
B. B, Li
C. H2 , Ne
D. Li , Na
6 Which of the following is invariant under Galilean transformation.
A. Velocity
B. Impulse
C. Momentum
D. Distance
7 A single quantum of electromagnetic radiation is termed as.
A. Compton
B. Photon
C. Hyperon
D. Meson
8 The mass of an alpha particle is.
A. 2 u
B. 4 u
C. 6 u
D. 8 u
9 Alpha particles are
A. Helium nuclei
B. sodium nuclei
C. Ioized nuclei
D. Hydrogen nuclei
10 Which given element has lowest work function
A. Na
B. Al
C. si
D. C

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