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

Emitter follower amplifier is an example of.

Question # 2

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

Question # 3

Neither the position nor the momentum of a particle can be predicted with arbitrarily great precision is the statement of.

Question # 4

Which of the following is the most massive particle.

Question # 5

The total energy of an electron in an orbit around the nucleus is.

Question # 6

Matter waves

Question # 7

LASER beam my be measure very large distance because it is.

Question # 8

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

Question # 9

Which of the following quantities is discrete according to Bohr's hypothesis.

Question # 10

In a Nuclear reactor which material is often used as modeerator.

Question # 11

Alpha particles emitted from a radioactive material are.

Question # 12

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

Question # 13

The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.

Question # 14

The electrons behave as wave because.

Question # 15

The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called.

Question # 16

Cobalt -60 is a radioactive element with half life of 5.25 years. What fraction of the original sample will be left after 26 years.

Question # 17

The input exultation for a JFET is

Question # 18

Which of the following is not a mode of radioactive decay.

Question # 19

The value of principal quantum number for an ionized atom is.

Question # 20

The reciprocal of decay constant lamda of a radioactive element is.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The rest mass of a particle is independent of the
A. Wavelength of the particle
B. Mass of the particle
C. Speed of the particle
D. Energy of the particle
2 In which of the following controlled nuclear chain reaction is used to liberate energy.
A. Nuclear bomb
B. Atomic bomb
C. Hydrogen bomb
D. Nuclear reactor
3 In Compton's effect it was considered that X-rays consist of
A. Electrons
B. Holes
C. Neutrons
D. Protons
4 An oscillator is basically an amplifier with loop gain
A. Zero
B. Less than unity
C. More than unity
D. Infinity
5 The electrons behave as wave because.
A. They can be diffracted by a crystal
B. They can be defecting by magnetic field
C. They can be deflecting by electric field
D. they can produce ions in gases
6 When using the formula E = h lambda what unit should energy have.
A. Joule
B. Watt second
C. Newton metre
D. Electron volt
7 What is the scale for measurement of Banbridge mass spectrograph.
A. Linear
B. Inverse
C. Exponential
D. Logarithmic
8 The necessary condition for nuclear fusion is.
A. High temperature and high pressure.
B. Low temperature and high pressure
C. Low temperature and low pressure
D. High temperature and low pressure.
9 The Beta particles move along.
A. Straight path
B. Curved path
C. Zig Zag path
D. Circular path
10 X-ray are
A. Streams of negatively charted particles.
B. Electromagnetic wave
C. Streams of positively charged particles
D. Visible light

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