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

Sub atomic particles which experience strong nuclear force are.

Question # 2

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

Question # 3

The usefulness of X rays is largely due to their

Question # 4

Which BJT configurations used for signal inversion.

Question # 5

Which of the following properties is not exhibited by X-rays.

Question # 6

Nuclear force as compared to electrostatic force is.

Question # 7

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

Question # 8

When a posirtron is emitted it causes.

Question # 9

X-rays are

Question # 10

At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.

Question # 11

The unit of Rydberg constant R is

Question # 12

LASER is a device which can produce.

Question # 13

On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.

Question # 14

During transition, atom cannot emit

Question # 15

In fission reaction, heavy water is used as a

Question # 16

The Rutherford atom according to classical theory is

Question # 17

There are how many modes of operations of a BJT.

Question # 18

Which one of the following quantities is conserved in a nuclear reactor.

Question # 19

The SI unit of decay constant is.

Question # 20

The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The energy that must be added to separate the nucleus is called.
A. Critical energy
B. Binding energy
C. Gravitational energy
D. Electrostatic energy
2 Which one of the following quantities is conserved in a nuclear reactor.
A. Energy only
B. Mass only
C. Momentum only
D. Mass energy and momentum
3 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
4 X-rays are good for imagining
A. Tendons
B. Brain
C. Bones
D. Heart
5 During transition, atom cannot emit
A. Visible light
B. Ultraviolet radiation
C. Infrared radiations
D. gama rays
6 The continuous X rays spectrum is due to an effect.
A. Bremsstrahlung
B. Breaking radiation
C. Holography
D. both a and b
7 The binding energy per nucleon for uranium is about.
A. 7.7 MeV
B. 9.6 MeV
C. 13.6 MeV
D. 21.6 MeV
8 In n-p-n transistor the current flows in the direction from
A. Emitter to base
B. emitter to collector
C. Base to emitter
D. Base to collector
9 Which given quantity remains the same in isotones.
A. Mass number
B. Atomic number
C. Number of neutrons
D. Number of protons
10 The output of two input OR gate is zero only when its.
A. Either input is one
B. Either input is zero
C. Both inputs are zero
D. Both inputs are one

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