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

The electrons behave as waves, because they can .

Question # 2

Which circuit elements has two stable states and can be used to store information.

Question # 3

The value of open loop gain for the amplifier is

Question # 4

In fission reaction, heavy water is used as a

Question # 5

One radian is equal to.

Question # 6

The SI unit of current gain is.

Question # 7

In CC configuration voltage gain is.

Question # 8

Transistor are made from

Question # 9

The continuous X rays spectrum is due to an effect.

Question # 10

Critical mass is the minimum mass needed for

Question # 11

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

Question # 12

The half life of uranium -238 is

Question # 13

The energy delivered to the tissue per unit mass is called the absorbed dose of.

Question # 14

X-rays spectrum may be

Question # 15

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

Question # 16

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

Question # 17

The helium nucleus does not contain

Question # 18

A gama ray of energy 1900 MeV is absorbed by

Question # 19

Radius of the Bother's orbit is r the radius of second orbit will be.

Question # 20

Lines of Balmer series are emitted by hydrogen atom when the electron jumps from

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 An operational amplifier can be used as a
A. Comparator
B. Night switch
C. Inverting and non inverting amplifier
D. All of the above
2 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
3 The wavelength of Lyman series for hydrogen spectrum lies in the.
A. Visible region
B. Ultraviolet region
C. Infrared region
D. Far infrared region
4 The chain reaction is controlled by a series of rods usually made of.
A. uranium
B. Cadimium
C. Boron
D. Steel
5 In a nuclear reactor chani reaction is controlled by introducing.
A. Iron rods
B. Cadmium rods
C. Graphite rods
D. Platinum rods
6 Photocells are used for
A. Security systems
B. Counting systems
C. Automatic door system
D. All of the above
7 A slow neutron can cause fission in
A. Uranium -238
B. Uranium-235
C. Hydrogen-1
D. Thorium -232
8 Which particle interact via all fundamental forces.
A. Leptons
B. Hadrons
C. Muons
D. mesons
9 Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.
A. Time period
B. Frequency
C. Voltage gain
D. phase angle
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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