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

When an object moves with a very high speed the length in the direction of motion.

Question # 2

In radiotherapy X-rays are used to.

Question # 3

The electrons behave as wave because.

Question # 4

Which of the following quantities is discrete according to Bohr's hypothesis.

Question # 5

An important property of an ideal power supply is.

Question # 6

Why FET amplifiers are called voltage controlled devices.

Question # 7

The total number nucleons in a nucleus are called.

Question # 8

What is the relativistic version of the Schrodinger equation.

Question # 9

Which of the following has the highest relative biological effectiveness or the quality factor.

Question # 10

X-rays spectrum may be

Question # 11

What are isotopes.

Question # 12

Emitter follower amplifier is an example of.

Question # 13

The band width of an audio amplifier is.

Question # 14

The converse of pair production is

Question # 15

Which Isotopes is use din radioactive dating.

Question # 16

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

Question # 17

For the normal operation of transistor the emitter base junction is always.

Question # 18

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

Question # 19

A transistor consists of.

Question # 20

Neither the position nor the momentum of a particle can be predicted with arbitrarily great precision is the statement of.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 LED is a p-n junction that emits
A. Visible light
B. X- rays
C. Ultraviolet light
D. electromagnetic waves
2 The most familiar example of radioactive dating is.
A. Nitrogen dating
B. Carbon dating
C. Hydrogen dating
D. Helium dating
3 Critical mass is the minimum mass needed for
A. Fusion
B. H-Bomb
C. Chain reaction
D. Binding energy
4 The band width of an audio amplifier is.
A. 10 Hz to 10 kHz
B. 20 Hz to 54 Hz
C. 20 Hz to 20 kHz
D. 20 Hz to 60 kHz
5 The term used for the emission of electrons when light strikes a surface.
A. The zeeman effect
B. The photo electric effect
C. Skin effect
D. Compton effect
6 Which of the following radiations can penetrate 20 cm thick steel.
A. Alpha particles
B. Beta particles
C. Gama particles
D. Neutrons
7 Photocells are used for
A. Security systems
B. Counting systems
C. Automatic door system
D. All of the above
8 In the Geiger Marsden experiment a narrow beam of alpha particles was fired at a thin piece of Gold foil in a vacuum Some of the particles were scattered though large angles The result of the experiment provided evidence for the existence of.
A. A very small charged nucleus
B. electrons orbiting the nucleus
C. Neutrons in the nucleus
D. Nuclear reaction
9 X-rays are
A. Longitudinal wave
B. Transvers waves
C. Secondary waves
D. Fast sound waves
10 Which uranium isotope having the atomic weights as given below is easily fissionable.
A. 234
B. 235
C. 236
D. 238

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