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

  • Time Allowed20

PPSC Physics Topic 7 Modern Physics

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Question # 1

The absorption of X-rays in a given material follows.

Question # 2

When a platinum wire is heated of 1600 oC, it becomes

Question # 3

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

Question # 4

Transistors with various combinations are widely used as switches in.

Question # 5

One particle having zero mass and zero charge is.

Question # 6

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

Question # 7

A slow neutron can cause fission in

Question # 8

The SI unit of equivalent dose is

Question # 9

The term used for the emission of electrons when light strikes a surface.

Question # 10

The mass of proton is equal to.

Question # 11

In which of the following studies x-rays are not helpful.

Question # 12

When a helium atom loses an electron it becomes.

Question # 13

Mosley's law establishes the x rays fluorescence's of target element with its.

Question # 14

Alpha particles are

Question # 15

When objects placed in a room are exposed to X- rays they appear

Question # 16

The constant lamda is called the.

Question # 17

A photon is chasing an electron, whose speed is 0.9 c What is their relative speed.

Question # 18

Which of the following describes that the time interval between two events may be different in different of references

Question # 19

Which of the following detectors can count fast and operate at low voltage.

Question # 20

the alpha particle does not travel for enough in air.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.
A. Target material
B. Accelerating voltage
C. Filament temperature
D. Separation between target and the filament
2 The half life of radium -226 is
A. 1620 years
B. 45 x 109 years
C. 3.8 days
D. 23.5 minutes
3 The decay process in which an unstable nucleus splits into two fragments of comparable mass is known as.
A. Nuclear fission
B. nuclear fusion
C. Radioactivity
D. Carbon dating
4 The critical mass of a fissionable material is.
A. 1 kg
B. 10 kg
C. 100 kg
D. 1.,000 kg
5 The SI unit of radioactivity is.
A. Becquerl
B. Curie
C. Joule
D. rutherford
6 Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.
A. 1 mA
B. 100 mA
C. 98 mA
D. 110 mA
7 In scattering experiment which force scatters alpha particle.
A. Nuclear force
B. Coulomb's force
C. Gravitational force
D. Centripetal force
8 Isotopes are the atoms of the same elements which contain equal number of.
A. Nucleus
B. Neutrons
C. Protons
D. Electrons
9 When objects placed in a room are exposed to X- rays they appear
A. Violet
B. Visible
C. Red
D. Invisible
10 X-ray are
A. Streams of negatively charted particles.
B. Electromagnetic wave
C. Streams of positively charged particles
D. Visible light

Test Questions

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