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

Try The MCQ's Test For PPSC Physics Topic 7 Modern Physics

  • Total Questions20

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PPSC Physics Topic 7 Modern Physics

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Question # 1

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.

Question # 2

Critical mass is the minimum mass needed for

Question # 3

The mass of an helium nucleus is equal to.

Question # 4

The energy in an electromagnetic wave is carried in the units called.

Question # 5

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

Question # 6

A complete amplifier circuit made on a silicon chip and enclosed in a small capsule is

Question # 7

Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.

Question # 8

The process of pair production will take place if the energy of photon is greater than.

Question # 9

Which particle is removed by a photon.

Question # 10

The relationship between mass number atomic number and neutron number is.

Question # 11

What are isotopes.

Question # 12

During the alpha decay process

Question # 13

In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.

Question # 14

The value of open loop gain for the amplifier is

Question # 15

The SI unit of decay constant is.

Question # 16

Nuclear force as compared to electrostatic force is.

Question # 17

The process of energy generation in sun and stars is.

Question # 18

Radio carbon in the atmosphere is produced by the bombardment of.

Question # 19

How many types of quarks were suggested i 1964 quark theory.

Question # 20

For an electron or position the rest mass energy is equal to.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 X-rays are
A. Longitudinal wave
B. Transvers waves
C. Secondary waves
D. Fast sound waves
2 the gain of an amplifier is independent of
A. The two externally connected resistances
B. What is happening inside the amplifier
C. Internal structure of the amplifier
D. All of the above
3 Which particle has zero charge and zero rest mass.
A. Neutron
B. Proton
C. Electron
D. Photon
4 The number of electrons in U nucleus are.
A. 92
B. 235
C. zero
D. 143
5 Why transistor is preferred to triode valve for use as an amplifier.
A. Because it can handle large power
B. Because it has higher input impedance
C. Because it has higher voltage gain
D. Because it has lower voltage gain
6 Low frequency response of an amplifier is mainly limited by.
A. Biasing configuration
B. Coupling capacitor
C. By pass capacitor
D. Input impedance
7 The wavelength of X-rays is of the ofder of.
A. 10-14 m
B. 10-10 m
C. 10-9 m
D. 10-6 m
8 When an object moves with a very high speed the length in the direction of motion.
A. Contracts
B. Expands
C. Remains the same
D. Becomes infinity
9 How positives feedback will effect an amplifier.
A. Increases the voltage gain
B. Decreases the voltage gain
C. Imitates oscillation to occur
D. Damaged it
10 A single quantum of electromagnetic radiation is termed as.
A. Compton
B. Photon
C. Hyperon
D. Meson

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