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

In n-p-n transistor the current flows in the direction from

Question # 2

The bunding energy per nucleon for iron is.

Question # 3

If we use two diodes and a centre tapped transformer we eill get

Question # 4

The SI unit of current gain is.

Question # 5

A logic circuit whose output signal is '1' when inputs are different is.

Question # 6

X-rays are good for imagining

Question # 7

The electrons behave as wave because.

Question # 8

Special theory of relativity deals with the events in the frames of reference which move with constant.

Question # 9

One becquerel is equal to

Question # 10

The charge on a helium nucleus is equal to the charge of.

Question # 11

Which of the following phenomenon is explained by the tunnel efffect.

Question # 12

Usually in an operational amplifier the inputs used are of

Question # 13

In the experiment of photo electric effect the minimum frequency of photons at which electrons are emitted from a metal surface is called.

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Which of the following is its own anti particle.

Question # 19

Negative feedback

Question # 20

X-rays are

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 In an electronic transition atom cannot emit
A. Gama rays
B. Visible rays
C. Infrared rays
D. Ultraviolet rays
2 Radio carbon in the atmosphere is produced by the bombardment of.
A. Oxygen by high energy neutrons
B. Oxygen by high energy protons
C. Nitrogen by high energy protons
D. Nitrogen by high energy neutrons
3 Which of the following propagates at the same speed as velocity of light.
A. Heat waves
B. Sound waves
C. Shock waves
D.
Beta particles
4 In order to reduce uncertainty in momentum one must use light of.
A. Short wavelength
B. Large wavelength
C. Wavelength of intermediate value
D. Wavelength of any value
5 As oscillator is basically an amplifier with loop gain
A. Zero
B. Infinity
C. Less than unity
D. More than unity
6 The radius of first Bohr's orbit for hydrogen atom is.
A. 0.53 m
B. 0.53 nm
C. 0.053 nm
D. 0.53 mm
7 From which radiation it is most difficult to protect oneslelf.
A. Alpha radiation
B. Beta radiation
C. Gama radiation
D. Heat radiation
8 Emitter follower amplifier is an example of.
A. Current series feedback
B. Voltage series feedback
C. Current shunt feed back
D. Voltage shunt feedback
9 A slow neutron can cause fission in
A. Uranium -238
B. Uranium-235
C. Hydrogen-1
D. Thorium -232
10 When a beta particle travels though a medium it knocks out electrons from the atoms due to.
A. Gravitational force of attraction
B. Electrostatic force of repulsion
C. Nuclear force
D. Electromagnetic induction

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