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

Which one of the following spectra series is in the ultraviolet region.

Question # 2

The most familiar example of radioactive dating is.

Question # 3

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

Question # 4

Deuterium is

Question # 5

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 # 6

According to Max. Planck, energy is released or absorbed in discrete packets called.

Question # 7

A deuteron is

Question # 8

The unit Planck's constant is equivalent to that of.

Question # 9

An active component of an electronic circuit consisting of a small block of semiconducting material to which at least three electrical contacts are made is known as.

Question # 10

During transition, atom cannot emit

Question # 11

The minimum amount of energy in an individual electron has to gain to escape from a particular surface is called.

Question # 12

At high temperature a body generally emits redactions of.

Question # 13

The most convenient unit for energy at the atomic level is.

Question # 14

The phenomenon of radioactivity is associated with

Question # 15

The electrons behave as waves, because they can .

Question # 16

Push pull amplifiers employ

Question # 17

When a beta particle travels though a medium it knocks out electrons from the atoms due to.

Question # 18

Which one of the following gates in a a universal gate.

Question # 19

When an object moves with a very high speed the length in the direction of motion.

Question # 20

When of the following radiations are not emitted by electron transitions in atoms.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 In which of the following controlled nuclear chain reaction is used to liberate energy.
A. Nuclear bomb
B. Atomic bomb
C. Hydrogen bomb
D. Nuclear reactor
2 A freshly made sample of radioactive material gives a count rate of 8,000 counts per minute After twenty days it gives a count rate of 500 counts per minute What is the half life of the materials.
A. 5 days
B. 10 days
C. 40 days
D. 20 days
3 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
4 The resistance between(+) and (-) inputs of an amplifier is.
A. Zero
B. Low
C. High
D. Infinity
5 Alpha particles are
A. Helium nuclei
B. sodium nuclei
C. Ioized nuclei
D. Hydrogen nuclei
6 X-rays are not used in RADARs because
A. They are not reflected by the target
B. they are not completely absorbed by air
C. They damage the target
D. They are reflected by the target
7 When an electron and a positron are annihilated, then number of protons produced is.
A. 1
B. 2
C. 3
D. 4
8 In radiotherapy X-rays are used to.
A. Treat cancer
B. Delect bone fracture
C. Cure heart diseasee
D. All of the above
9 Induced fission result from the absorption of
A. electron
B. Proton
C. Nucleon
D. Neutron
10 When a helium atom loses an electron it becomes.
A. An a particle
B. A proton
C. A positive helium ion
D. A negative helium ion

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