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

Which one of the following is a neutron absorber

Question # 2

The capture of neutron by a proton results in the formation of.

Question # 3

An AND gate is.

Question # 4

Which one of the following has the largest wavelength.

Question # 5

The absorption of X-rays in a given material follows.

Question # 6

The tunnel effect makes possible

Question # 7

As oscillator is basically an amplifier with loop gain

Question # 8

Radioactive decay series can be represents on

Question # 9

Two electrons approach each other their relative velocity will be.

Question # 10

The exitance of more than one distinct state with the same energy is called.

Question # 11

X-rays are

Question # 12

One radian is equal to.

Question # 13

Transistor stands for

Question # 14

The electrons behave as waves, because they can .

Question # 15

Usually in an operational amplifier the inputs used are of

Question # 16

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

Question # 17

Which of the following phenomenon cannot be understood by quantum theory.

Question # 18

How positives feedback will effect an amplifier.

Question # 19

The value of open loop gain for the amplifier is

Question # 20

The hyperfine lines in the spectrum relates to

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Sr.# Question Answer
1 Radioactivity is the phenomenon associated with the.
A. Transition of radiowaves
B. production of alpha particles only
C. Decay of nucleus
D. Reception of radio waves
2 At what speed the mass of a body will be doubled.
A. 0.67 C
B. 0.77 C
C. 0.87 C
D. 0.97 C
3 Matter waves
A. Are electromagnetic in nature
B. Travel with the speed of light
C. Can be diffracted
D. Are longitudinal waves
4 A slow neutron can cause fission in
A. Uranium -238
B. Uranium-235
C. Hydrogen-1
D. Thorium -232
5 The critical mass of a fissionable material is.
A. 1 kg
B. 10 kg
C. 100 kg
D. 1.,000 kg
6 Which one of the following is a neutron absorber
A. Pb
B. Cd
C. Cu
D. Ag
7 What is the basic advantage of class A operation of an amplifier.
A. It has high efficiency
B. It has high gain
C. It has low distortion
D. It has high distortion
8 Mosley's law establishes the x rays fluorescence's of target element with its.
A. Atomic weight
B. Atomic number
C. Density
D. Lattice constant
9 The hyperfine lines in the spectrum relates to
A. Stark effect
B. Zeeman effect
C. Lande's spliting
D. Nuclear magnetic spin
10 The unit Planck's constant is equivalent to that of.
A. Energy
B. Force
C. Velocity
D. Angular momentum
11 The total energy of the hydrogen atom is
A. zero
B. Infinite
C. positive
D. Negative
12 X-rays spectrum may be
A. Continuous spectrum
B. Discontinuous spectrum
C. Line spectrum
D. Continuous and line spectrum
13 How many types of quarks were suggested i 1964 quark theory.
A. Two
B. Three
C. Four
D. Five
14 Which of the following is basic transistor configuration.
A. CB
B. CC
C. CE
D. All of these
15 A deuteron is
A. A type of proton
B. A proton neutron bounded to gather.
C. A type of beta particle
D. A type of neutron
16 The particles less in mass than protons are
A. Measons
B. Bosons
C. Baryons
D. Nucleons
17 Which particles have spin quantum number 1/2
A. Mesons
B. Laptons
C. Hadrons
D. Muons
18 A solid state detector is basically
A. A reverse biased p-n junction
B. A forward biased p-n junction
C. A p-n -p transistor
D. A n-p-n transistor
19 The half life of radium -226 is
A. 1620 years
B. 45 x 109 years
C. 3.8 days
D. 23.5 minutes
20 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

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