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 X-rays coming from a X-rays tube

Question # 2

In a Nuclear reactor which material is often used as modeerator.

Question # 3

The photons emitted in inner shell transition are.

Question # 4

The value of open loop gain for the amplifier is

Question # 5

The angle of scattering for which the Compton shift is maximum is.

Question # 6

The advantage of electron tube over a transistor is.

Question # 7

The process of pair production will take place if the energy of photon is greater than

Question # 8

Which of the following properties is not exhibited by X-rays.

Question # 9

A CE amplifier with by passed emitter resistor is an example of.

Question # 10

Which Isotopes is use din radioactive dating.

Question # 11

The phenomenon in which a photon of frequency 'f' is scattered by an electron and the scattered photon has frequency f <f is known as.

Question # 12

Radioactive substances do not emit

Question # 13

Which of the following is not a mode of radioactive decay.

Question # 14

The reciprocal of decay constant lamda of a radioactive element is.

Question # 15

Sub atomic paticles whihc does not experience strong nuclear force are.

Question # 16

The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.

Question # 17

An AND gate is.

Question # 18

In a transistor which one is very thin.

Question # 19

Which of the following can be used as an arrester in a nuclear reactor.

Question # 20

Which one among these contacts in a transistor is non rectifying.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 NOR gate is a combination of.
A. OR gate and NOT gate
B. OR gate and AND gate
C. OR gate and OR gate
D. NOT gate and AND gate
2 Negative feedback
A. Increases stability
B. Decreases stability
C. Produces oscillatory
D. Cannot occur
3 Push pull amplifiers employ
A. One transistor
B. Two transistors
C. Three transistors
D. Four transistors
4 As oscillator is basically an amplifier with loop gain
A. Zero
B. Infinity
C. Less than unity
D. More than unity
5 The SI unit of equivalent dose is
A. Seivert
B. Gray
C. Radian
D. Rem
6 Both xenon and cesium each have
A. 24 isotopes
B. 28 isotopes
C. 32 isotopes
D. 36 isotopes
7 The path of electron in Rutherford atomic model according to classical theory a.
A. Parabolic
B. Straight line
C. Spiral
D. Circular
8 At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.
A. 0.3 v
B. 0.5 V
C. 0.7 V
D. 0.9 V
9 Which of the following is not a mode of radioactive decay
A. Nuclear fusion
B. Alpha decay
C. Electron capture
D. Positron emission
10 Work function is generally expressed in.
A. Electron volt
B. Joules
C. Newtons
D. Gauss

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