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

00:00
Question # 1

The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.

Question # 2

Which of the following is formed by decay of a free neurton.

Question # 3

In which of the following controlled nuclear chain reaction is used to liberate energy.

Question # 4

the wavelength of continuous X-rays is inversely proportional to.

Question # 5

The wavelength of Lyman series for hydrogen spectrum lies in the.

Question # 6

What is the scale for measurement of Banbridge mass spectrograph.

Question # 7

In the experiment of production of X rays electrons are accelerated towards the anode by

Question # 8

A gama ray of energy 1900 MeV is absorbed by

Question # 9

For an electron or position the rest mass energy is equal to.

Question # 10

What is the energy equivalent to amu in Me V

Question # 11

The resistance between(+) and (-) inputs of an amplifier is.

Question # 12

The SI unit of decay constant is.

Question # 13

The emission of photons by a metal when electrons are incident is called.

Question # 14

The band width of an audio amplifier is.

Question # 15

An increase in frequency above threshold frequency results in.

Question # 16

Which of the following describes that the time interval between two events may be different in different of references

Question # 17

The relationship between mass number atomic number and neutron number is.

Question # 18

Which BJT configurations used for signal inversion.

Question # 19

Radioactivity is the phenomenon associated with the.

Question # 20

Which type of amplifier causes minimum drain of power supply.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Most widely used types of gas LASER are
A. Neon
B. Argon ion
C. Helium
D. All of these
2 The hyperfine lines in the spectrum relates to
A. Stark effect
B. Zeeman effect
C. Lande's spliting
D. Nuclear magnetic spin
3 A slow neutron can cause fission in
A. Uranium -238
B. Uranium-235
C. Hydrogen-1
D. Thorium -232
4 In annitilation of matter, positron and electron pair disappears into two
A. Alpha particles
B. Beta particles
C. Game particles
D. X-rays
5 The gama rays have
A. Thin tracks
B. Thick tracks
C. No definite tracks
D. Continuous tracks
6 An important property of an ideal power supply is.
A. Infinite internal resistance
B. Zero internal resistance
C. Large output resistance
D. Small output resistance
7 The neutral atoms of all isotopes of the same element contain the same numbers of.
A. Electrons and protons
B. Electrons and neutrons
C. Neutrons
D. Neutrons and protons
8 When Be is bombarded by alpha particles, then we obtain
A. electron
B. Proton
C. Positron
D. Neutron
9 Emitter follower amplifier is an example of.
A. Current series feedback
B. Voltage series feedback
C. Current shunt feed back
D. Voltage shunt feedback
10 The 'x' in X-rays means
A. Xenon
B. Explosion
C. x for unknown
D. X makes the spot

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