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

A solid state detector is basically

Question # 2

The critical mass of a fissionable material is.

Question # 3

Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.

Question # 4

Which of the following circuits is used as local oscillator in radio receivers.

Question # 5

How positives feedback will effect an amplifier.

Question # 6

The advantage of electron tube over a transistor is.

Question # 7

Which of the following is the most massive particle.

Question # 8

An increase in frequency above threshold frequency results in.

Question # 9

Which of the following phenomenon is observed in obtaining an X ray photograph of our hand.

Question # 10

The energy in an electromagnetic wave is carried in the units called.

Question # 11

A logic circuit whose output signal is '1' when inputs are different is.

Question # 12

A body moves with velocity of 2 x 106 m s-1 its relativistic mass becomes

Question # 13

Critical mass is the minimum mass needed for

Question # 14

The half life of a radioactive element depends upon.

Question # 15

As the mass number varies, which of the quantities does not change w.r.t nucleus.

Question # 16

The phenomenon of Compton's effect process that right has

Question # 17

The best shield against Gama rays would be of

Question # 18

Choose the one which acts as single inverter.

Question # 19

The necessary condition for nuclear fusion is.

Question # 20

An important property of an ideal power supply is.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The SI unit of current gain is.
A. Ampere
B. Ampere metre
C. Ampere volt
D. It has no unit
2 The part of theory of relativity which deals with accelerated bodies is called.
A. special theory of relativity
B. General theory of relativity
C. Lorentz's theory of relativity
D. Galilean theory of relativity
3 X-ray are
A. Streams of negatively charted particles.
B. Electromagnetic wave
C. Streams of positively charged particles
D. Visible light
4 The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.
A. Zeeman's effect
B. Photoelectric effect
C. Compton's effect
D. Annihilation of matter
5 The relationship between mass number atomic number and neutron number is.
A. A = Z + N
B. A = Z - N
C. Z = A + N
D. N = Z - A
6 White light a tungsten filament lamp is passed through sodium vapor and viewed through a diffraction gritting Which of the following best describes the spectrum which would be seen.
A. Coloured lines on a black background
B. Coloured lines on a white background
C. Dark lines on a coloured background
D. Dark lines on a white background
7 In a Nuclear reactor which material is often used as modeerator.
A. Water
B. Graphite
C. Uranium
D. Water and graphite
8 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
9 The path of electron in Rutherford atomic model according to classical theory a.
A. Parabolic
B. Straight line
C. Spiral
D. Circular
10 Phenomenon of radioactivity is due to disintegration of.
A. Proton
B. Neutron
C. electron
D. nucleus

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