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

Which experiment confirmed the de Broglie hypothesis.

Question # 2

The phenomenon of Compton's effect process that right has

Question # 3

In order to reduce uncertainty in momentum one must use light of.

Question # 4

What is the effect of electric and magnetic fields on X-rays

Question # 5

Transistor stands for

Question # 6

The average energy released per fission of U is about

Question # 7

The energy equivalent of 1 kg of matter a

Question # 8

On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.

Question # 9

The critical mass of a fissionable material is.

Question # 10

An emitter follower has

Question # 11

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

Question # 12

If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.

Question # 13

The most convenient unit for energy at the atomic level is.

Question # 14

An increase in frequency above threshold frequency results in.

Question # 15

When a posirtron is emitted it causes.

Question # 16

The SI unit of current gain is.

Question # 17

Which of the following radiations can penetrate 20 cm thick steel.

Question # 18

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

Question # 19

The SI unit of absorbed dose in.

Question # 20

When an electron and a positron are annihilated, then number of protons produced is.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The most readily fissionable isotope of uranium has atomic mass of
A. 234
B. 235
C. 236
D. 238
2 Which particle are not emitted by a radioactive substance.
A. Alpha particles
B. Beta particles
C. Gama particles
D. Neutrons
3 Which Isotopes is use din radioactive dating.
A. C12
B. C13
C. C14
D. C16
4 X-rays travel with
A. The speed of light
B. The speed of sound
C. The speed of 3,000 m s-1
D. The speed of 3,500 m s-1
5 In scattering experiment which force scatters alpha particle.
A. Nuclear force
B. Coulomb's force
C. Gravitational force
D. Centripetal force
6 The SI unit of decay constant is.
A. m
B. m-1
C. s-1
D. N m-1
7 The total energy of an electron in an orbit around the nucleus is.
A. Zero
B. Unity
C. Infinity
D. Negative
8 The emission of electrons from a metal surface when exposed to light of suitable frequency is called.
A. Pair production
B. Compton effect
C. Photo electric effect
D. Zeeman effect
9 The photons emitted in inner shell transition are.
A. Alpha particle
B. Beta particle
C. Gama particle
D. Characteristic X-rays
10 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

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