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

00:00
Question # 1

The process of energy generation in sun and stars is.

Question # 2

Which of the following has the highest relative biological effectiveness or the quality factor.

Question # 3

The change in wavelength of an X-ray when scattered from an electron is called.

Question # 4

When Be is bombarded by alpha particles, then we obtain

Question # 5

Mosley's law establishes the X-rays fluorescence of target element with is.

Question # 6

The necessary condition for nuclear fusion is.

Question # 7

The reciprocal of decay constant lamda of a radioactive substances is equal to.

Question # 8

When light of particular frequency is allowed to fall upon a metal surface electrons are emitted from a these emitted electrons are called.

Question # 9

The SI unit of equivalent dose is

Question # 10

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

Question # 11

Mosley's law establishes the x rays fluorescence's of target element with its.

Question # 12

Which one the following is not a component of a Bipolar junction Transistor

Question # 13

the alpha particle does not travel for enough in air.

Question # 14

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

Question # 15

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

Question # 16

The energy equivalent of 1 kg of matter a

Question # 17

Which of the following is not a mode of radioactive decay

Question # 18

The two elements with same number of electrons but different mass number are called.

Question # 19

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

Question # 20

The term used for the emission of electrons when light strikes a surface.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 In Compton's effect it was considered that X-rays consist of
A. Electrons
B. Holes
C. Neutrons
D. Protons
2 Mass -energy relation means that the product of mass times the square of the speed of light must be equal to.
A. Torque
B. Momentum
C. Energy
D. Impulse
3 Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.
A. Attraction of nucleus
B. Collision with nuclei
C. Interactions with electrons
D. Electrostatic repulsion by the nucleus
4 A body moves with velocity of 2 x 106 m s-1 its relativistic mass becomes
A. Zero
B. Unity
C. Double of its rest mass
D. Infinity
5 The SI unit of equivalent dose is
A. Seivert
B. Gray
C. Radian
D. Rem
6 An Alpha particle is the same as
A. A helium nucleus
B. A high speed electron
C. A hydrogen nucleus
D. Electromagnetic radiation of short wavelength
7 Though the wavelength of X-rays is smaller than that of visible light yet the speed of X-rays in vacuum is.
A. longer that that of visible light
B. Smaller than that of visible light
C. Same as that of visible light
D. Unpredictable
8 The binding energy to pull the deuterium H apart into a proton and a neutron is equal to.
A. 1.22 MeV
B. 2.22 MeV
C. 3.22 Mev
D. 4.22 MeV
9 There are how many modes of operations of a BJT.
A. 2
B. 3
C. 4
D. 5
10 The molecular weight of D2O is
A. 16
B. 18
C. 20
D. 24

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