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

A darling ion amplifier is characterized by

Question # 2

Work function is generally expressed in.

Question # 3

During transition, atom cannot emit

Question # 4

The division and germier experiment relates to

Question # 5

In de Brogile model electron orbit must form

Question # 6

How many terminals does a BJT have.

Question # 7

Compton scattering experiment seemed to indicate that radiation had

Question # 8

The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.

Question # 9

As the mass number varies, which of the quantities does not change w.r.t nucleus.

Question # 10

The most suitable material for moderator in a nuclear reactor is.

Question # 11

Phenomenon of radioactivity is due to disintegration of.

Question # 12

The exitance of more than one distinct state with the same energy is called.

Question # 13

The usefulness of X rays is largely due to their

Question # 14

Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.

Question # 15

Which given quantity remains the same in isotones.

Question # 16

The energy of neutrons obtained during a fission reaction is.

Question # 17

The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.

Question # 18

The reciprocal of decay constant lamda of a radioactive substances is equal to.

Question # 19

Nuclear force exists between

Question # 20

The particles equal in mass or greater than protons are called.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Sub atomic particles which experience strong nuclear force are.
A. Leptons
B. Hadrons
C. Mesons
D. Quarks
2 The resistance between(+) and (-) inputs of an amplifier is.
A. Zero
B. Low
C. High
D. Infinity
3 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
4 Which of the following particles leave no trail in a cloud chamber.
A. Electrons
B. Protons
C. Alpha particles
D. Neutrons
5 A solid state detector is basically
A. A reverse biased p-n junction
B. A forward biased p-n junction
C. A p-n -p transistor
D. A n-p-n transistor
6 A transistor consists of.
A. One p-n junction
B. Two p-n junctions
C. Three p-n junctions
D. Four p-n junction
7 Transistors with various combinations are widely used as switches in.
A. electric generators
B. Rectificers
C. Amplifiers
D. Computers
8 When light of particular frequency is allowed to fall upon a metal surface electrons are emitted from a these emitted electrons are called.
A. Photons
B. Holes
C. Quants
D. Photo electrons
9 When a posirtron is emitted it causes.
A. Mass number to increase by one
B. mass number to decrease by one
C. Atomic number to decrease by one
D. Atomic number to increase by one
10 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

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