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

Try The MCQ's Test For PPSC Physics Topic 7 Modern Physics

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PPSC Physics Topic 7 Modern Physics

00:00
Question # 1

Which circuit elements has two stable states and can be used to store information.

Question # 2

The potential due to which an electron is lifted from gerund state to excited state is.

Question # 3

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

Question # 4

The energy that must be added to separate the nucleus is called.

Question # 5

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

Question # 6

Which of the following is required for maintaining sustained chain reaction.

Question # 7

The SI unit of equivalent dose is

Question # 8

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

Question # 9

The molecular weight of D2O is

Question # 10

Ashes from a campfire deep in a cave show carbon -14 activity of only one eighth the activity of fresh wood. How long ago was that campfire made.

Question # 11

Cs - 137 is a radioisotope used ot determine the thickness of the walls of steel pipes Cs 137 is chosen because it emits

Question # 12

The half life of uranium -238 is

Question # 13

When using the formula E = h lambda what unit should energy have.

Question # 14

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

Question # 15

The radius of first Bohr's orbit for hydrogen atom is.

Question # 16

Which one of the following is a convenient energy unit to express the energy of sub atomic particles.

Question # 17

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

Question # 18

Which given element has lowest work function

Question # 19

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

Question # 20

Which of the following is not a mode of radioactive decay

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 One becquerel is equal to
A. Decay of orie radioactive atoms per second
B. Decay of 10 radioactive atoms per secnd
C. Decay of 100 radioactive atoms per second
D. Decay of infinity radioactive atoms per second.
2 The simple form of particle accelerator is.
A. Cathode ray tube
B. Oscillator
C. Amplifier
D. Phase locked loop
3 Why is a capacitor resistor combination used in oscillators in grid circuit.
A. To generate oscillation
B. To bias the grid automatically
C. To amplify oscillations
D. To sustain the oscillations.
4 The working of cloud chamber is based in the presence of.
A. Super heated vapours
B. Liquid
C. Super saturated vapors
D. Unsaturated vapours
5 The total energy of the hydrogen atom is
A. zero
B. Infinite
C. positive
D. Negative
6 The total number nucleons in a nucleus are called.
A. Mass number
B. Atomic number
C. Neutron number
D. Isotopes
7 The capture of neutron by a proton results in the formation of.
A. Deuteron and gama rays
B. Deuteron and alpha particle
C. Triton and Beta particles
D. Tritron and X rays
8 The angle of scattering for which the Compton shift is maximum is.
A. 0 o
B. 45 o
C. 80 o
D. 180 o
9 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
10 In CC configuration voltage gain is.
A. Less than one
B. More than one
C. One
D. Zero

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