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

What is the effect of electric and magnetic fields on X-rays

Question # 2

A transistor consists of.

Question # 3

An Alpha particle is the same as

Question # 4

An oscillator is basically an amplifier with loop gain

Question # 5

The half life of a radioactive element depends upon.

Question # 6

An AND gate is.

Question # 7

Photocells are used for

Question # 8

The advantage of electron tube over semiconductor is.

Question # 9

x-rays cannot produce

Question # 10

The mass of proton is equal to.

Question # 11

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

Question # 12

When a beta particle travels though a medium it knocks out electrons from the atoms due to.

Question # 13

Positron are produced during.

Question # 14

Which of the following is not a mode of radioactive decay.

Question # 15

In a transistor which one is very thin.

Question # 16

The nucleus of tritium is called.

Question # 17

Critical mass is the minimum mass needed for

Question # 18

The converse of pair production is

Question # 19

According to Max. Planck, energy is released or absorbed in discrete packets called.

Question # 20

Cosmic rays mostly comprise of

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 In potential for the material of cathode pure metals are rarely used because of their
A. Low reflecting power
B. High reflecting power
C. Low resolving power
D. High resolving power
2 Which particle has zero charge and zero rest mass.
A. Neutron
B. Proton
C. Electron
D. Photon
3 The average energy released per fission of U is about
A. 200 eV
B. 2 keV
C. 2 MeV
D. 200 MeV
4 In Compton's effect the change in wavelength of a scattered photon is called.
A. Angle of emergence
B. Angle of refraction
C. Angle of deviation
D. Compton shift
5 In which of the following studies x-rays are not helpful.
A. Crystal structure
B. Crystal surface
C. Crystal symmetry
D. Crystal atoms
6 If we use two diodes and a centre tapped transformer we eill get
A. Transistor
B. Amplifier
C. Half wave rectifier
D. Full wave rectifier
7 An Alpha particle is the same as
A. A helium nucleus
B. A high speed electron
C. A hydrogen nucleus
D. Electromagnetic radiation of short wavelength
8 Which of the following is not an electromagnetic wave.
A. game rays
B. Ultraviolet rays
C. Ultrasonic waves
D. Microwaves
9 Which of the following is not a mode of radioactive decay.
A. Positron emission
B. Electron capture
C. Fusion reaction
D. A decay
10 The most abundant isotope of neon is.
A. Neon -20
B. Neon -21
C. Neon -22
D. Both a and c

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