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

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Question # 1

For an electron or position the rest mass energy is equal to.

Question # 2

Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.

Question # 3

In potential for the material of cathode pure metals are rarely used because of their

Question # 4

As the mass number increases, the binding energy per nucleon in a nucleus

Question # 5

LASER beam my be measure very large distance because it is.

Question # 6

LED is a p-n junction that emits

Question # 7

Which of the following is believed to be carrier o nuclear forces.

Question # 8

In the experiment of production of X rays electrons are accelerated towards the anode by

Question # 9

The half life of a radioactive substance depend on.

Question # 10

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 # 11

The half life of uranium -238 is

Question # 12

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

Question # 13

The transition of inner shell electrons in heavy atoms gives rise to the emission of.

Question # 14

How positives feedback will effect an amplifier.

Question # 15

the alpha particle does not travel for enough in air.

Question # 16

The back ground radiation in the atmosphere on the average is

Question # 17

Why transistor is preferred to triode valve for use as an amplifier.

Question # 18

The unit generally used for measuring astronomical distances is.

Question # 19

Marie Curie and Pierre Curie discovered two new radioactive elements which are.

Question # 20

The resistance between(+) and (-) inputs of an amplifier is.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Radioactive decay series can be represents on
A. Smith chart
B. Segre chart
C. Logarithmic chart
D. Carbon paper
2 The unit Planck's constant is equivalent to that of.
A. Energy
B. Force
C. Velocity
D. Angular momentum
3 Usually in an operational amplifier the inputs used are of
A. Equal voltage and same polarity
B. Equal voltage and opposite polarity
C. Different voltage and same polarity
D. Different voltage and opposite polarity
4 The value of principal quantum number for an ionized atom is.
A. 13.6 eV
B. 27.2 eV
C. 54.4 eV
D. 100 eV
5 LASER is a device which can produce.
A. Monochromatic beam of light
B. Coherent beam of light
C. An intense beam of light
D. All of the above
6 The SI unit of radioactivity is.
A. Becquerl
B. Curie
C. Joule
D. rutherford
7 The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.
A. Zeeman's effect
B. Photoelectric effect
C. Compton's effect
D. Annihilation of matter
8 Special theory of relativity deals with the events in the frames of reference which move with constant.
A. Time interval
B. Acceleration
C. Momentum
D. space interval
9 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
10 X-rays are
A. Longitudinal wave
B. Transvers waves
C. Secondary waves
D. Fast sound waves

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