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 of the following are electromagnetic waves.

Question # 2

The necessary condition for nuclear fusion is.

Question # 3

The total energy of the hydrogen atom is

Question # 4

In radiotherapy X-rays are used to.

Question # 5

The advantage of electron tube over semiconductor is.

Question # 6

Photocells are used for

Question # 7

Which of the following is deflected by an electric field.

Question # 8

When an electron and a positron are annihilated, then number of protons produced is.

Question # 9

Sub atomic paticles whihc does not experience strong nuclear force are.

Question # 10

In an electronic transition atom cannot emit

Question # 11

Lines of Balmer series are emitted by hydrogen atom when the electron jumps from

Question # 12

The mass of proton is equal to.

Question # 13

X-rays are absorbed maximum by

Question # 14

Which of the following is the most massive particle.

Question # 15

When we pass a radiation from a radioactive material through an electric field.

Question # 16

The Beta particles move along.

Question # 17

What is the quantitative description of the effect of radiation on the living tissue.

Question # 18

Which of the following detectors can count fast and operate at low voltage.

Question # 19

A perfect back body

Question # 20

Which of the following is the most commonly used regions of operations for a transistor.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The energy in electron volts necessary to remove the most loosely bound electron from the neutral atom is known as.
A. Faraday energy
B. Wave number
C. Ionization Potential
D. Excitation potential
2 The particles equal in mass or greater than protons are called.
A. Mesons
B. Bosons
C. Baryons
D. Nucleons
3 x-rays cannot produce
A. Photoelectron
B. Compton electron
C. Electron positron pair
D. All of these
4 The strength of photo electric current depends upon.
A. Intensity of incident light
B. Frequency of incident light
C. Angle of incident light
D. Distance between anode and cathode
5 Cs - 137 is a radioisotope used ot determine the thickness of the walls of steel pipes Cs 137 is chosen because it emits
A. Radiowaves
B. Alpha particles
C. Beta particles
D. gama particles
6 In a fission reactor which particle causes a uranium -235 nucleus to split.
A. Alpha particle
B. Gama ray
C. Neutron
D. Proton
7 What do we study by crystallography.
A. The analysis of X ray spectra of elements and study of crystal structure.
B. Visible spectra of sources and crystal study
C. Ultraviolet spectra of sources and crystal study
D. Characteristics of X-rays
8 A gama ray of energy 1900 MeV is absorbed by
A. Proton antiproton pair
B. Electron positron pair
C. Producing heat in the substance
D. The orbit
9 In which of the following studies x-rays are not helpful.
A. Crystal structure
B. Crystal surface
C. Crystal symmetry
D. Crystal atoms
10 The mass of an alpha particle is.
A. 2 u
B. 4 u
C. 6 u
D. 8 u

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