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

00:00
Question # 1

Half life of a radioactive elements 10 minutes If the initial cont. rate is 368 counts per minute for what time count rate reaches 32 counts per minute.

Question # 2

The usefulness of X rays is largely due to their

Question # 3

A spectroscope sorts out

Question # 4

The force that bonds protons and neutrons together int he nucleus despite the electrical repulsion of the protons is called.

Question # 5

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

Question # 6

As the mass number varies, which of the quantities does not change w.r.t nucleus.

Question # 7

The SI unit of current gain is.

Question # 8

Which quantity remains fixed in isobars.

Question # 9

The binding energy per nucleon for uranium is about.

Question # 10

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

Question # 11

In heavy elements of the periodic table the number of neutrons than protons are.

Question # 12

LED is a p-n junction that emits

Question # 13

The electrons behave as waves, because they can .

Question # 14

Which one of the following quantities is conserved in a nuclear reactor.

Question # 15

The mass of an alpha particle is.

Question # 16

An AND gate is.

Question # 17

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 # 18

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

Question # 19

The input exultation for a JFET is

Question # 20

At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.

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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 Transistors with various combinations are widely used as switches in.
A. electric generators
B. Rectificers
C. Amplifiers
D. Computers
3 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
4 A photon is chasing an electron, whose speed is 0.9 c What is their relative speed.
A. 0.1 C
B. C
C. 0.8 C
D. 0.9 C
5 There are how many types of forces or interactions.
A. Two
B. Three
C. Four
D. Five
6 The most readily fissionable isotope of uranium has atomic mass of
A. 234
B. 235
C. 236
D. 238
7 Which of the following wavelength lies in X-rays region.
A. 1 A
B. 100 A
C. 1,000 A
D. 10,000 A
8 In heavy elements of the periodic table the number of neutrons than protons are.
A. Lesser
B. Greater
C. Equal
D. Undetermined
9 The photons emitted in inner shell transition are.
A. Alpha particle
B. Beta particle
C. Gama particle
D. Characteristic X-rays
10 Which of the following radiations can penetrate 20 cm thick steel.
A. Alpha particles
B. Beta particles
C. Gama particles
D. Neutrons

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