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

How much large is the proton mass than the electron mass.

Question # 2

Which BJT configurations used for signal inversion.

Question # 3

Which of the following configuration of BJTs gives both voltage gain and current gain.

Question # 4

The Beta particles move along.

Question # 5

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

Question # 6

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

Question # 7

Matter waves

Question # 8

x-rays cannot produce

Question # 9

When light of particular frequency is allowed to fall upon a metal surface electrons are emitted from a these emitted electrons are called.

Question # 10

A unijunction transistor

Question # 11

The band width of an audio amplifier is.

Question # 12

Alpha particles are

Question # 13

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

Question # 14

A transistor consists of.

Question # 15

Transistor stands for

Question # 16

The chain reaction is controlled by a series of rods usually made of.

Question # 17

X-rays are absorbed maximum by

Question # 18

LASER is a device which can produce.

Question # 19

Deuterium is

Question # 20

The maximum K.E. with which photoelectrons are emitted depends very strongly on the.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 At high temperature a body generally emits redactions of.
A. Small wavelengths
B. Long wavelengths
C. Moderates wavelengths
D. Zero wavelengths
2 If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.
A. cut of mode
B. Amplification mode
C. Saturation mode
D. Inversion mode
3 Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.
A. Attraction of nucleus
B. Collision with nuclei
C. Interactions with electrons
D. Electrostatic repulsion by the nucleus
4 Alpha particles are used for the treatment of skin of a patient due to.
A. Highly ionizing power
B. Low penetration power
C. Positively charged particles
D. Helium nucler
5 An oscillator is basically an amplifier with loop gain
A. Zero
B. Less than unity
C. More than unity
D. Infinity
6 Which particles have spin quantum number 1/2
A. Mesons
B. Laptons
C. Hadrons
D. Muons
7 Neither the position nor the momentum of a particle can be predicted with arbitrarily great precision is the statement of.
A. Archimede's principle.
B. Heisenberg uncertainty principle
C. Mosley's law
D. Schrodinger's wave equation
8 When of the following radiations are not emitted by electron transitions in atoms.
A. Visible rays
B. Ultraviolet rays
C. Infrared radiations
D. Alpha particles
9 Which of the following circuits is used as local oscillator in radio receivers.
A. AF oscillator
B. Phase Local Loop
C. RF oscillator
D. All of the above
10 Which of the following is formed by decay of a free neurton.
A. A number of electrons
B. Two protons
C. A proton and an electron
D. An alpha particle

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