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

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PPSC Physics Topic 7 Modern Physics

00:00
Question # 1

Which experiment is a demonstration that matter and energy can display properties of both waves and particles.

Question # 2

the alpha particle does not travel for enough in air.

Question # 3

Magnetic field does not cause deflection in

Question # 4

the gain of an amplifier is independent of

Question # 5

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

Question # 6

A slow neutron can cause fission in

Question # 7

Ashes from a campfire deep in a cave show carbon -14 activity of only one eighth the activity of fresh wood. How long ago was that campfire made.

Question # 8

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

Question # 9

The half life of a radioactive substance depend on.

Question # 10

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

Question # 11

A gama ray of energy 1900 MeV is absorbed by

Question # 12

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

Question # 13

In heavy elements of the periodic table the number of neutrons than protons are.

Question # 14

A deuteron is

Question # 15

Two electrons approach each other their relative velocity will be.

Question # 16

The total energy of an electron in an orbit around the nucleus is.

Question # 17

In de Brogile model electron orbit must form

Question # 18

Which of the following phenomenon is observed in obtaining an X ray photograph of our hand.

Question # 19

The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.

Question # 20

The mass of proton is equal to.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 X-rays travel with
A. The speed of light
B. The speed of sound
C. The speed of 3,000 m s-1
D. The speed of 3,500 m s-1
2 The process of pair production will take place if the energy of photon is greater than
A. 0.21 MeV
B. 0.51 MeV
C. 1.51 MeV
D. 1.21 MeV
3 Radioactivity is the phenomenon associated with the.
A. Transition of radiowaves
B. production of alpha particles only
C. Decay of nucleus
D. Reception of radio waves
4 The bunding energy per nucleon for iron is.
A. zero
B. Maximum
C. Negative
D. Minimum
5 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
6 The unit generally used for measuring astronomical distances is.
A. Parsecs
B. Light year
C. Metre
D. Kilometer
7 The most abundant isotope of neon is.
A. Neon -20
B. Neon -21
C. Neon -22
D. Both a and c
8 Though the wavelength of X-rays is smaller than that of visible light yet the speed of X-rays in vacuum is.
A. longer that that of visible light
B. Smaller than that of visible light
C. Same as that of visible light
D. Unpredictable
9 Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.
A. Simultaneously
B. Mass variation
C. time dilation
D. Length contraction
10 When a platinum wire is heated of 1600 oC, it becomes
A. orange
B. Cherry red
C. Dull red
D. White

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