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

Which one of the following is a convenient energy unit to express the energy of sub atomic particles.

Question # 2

What is the overall gain, if three amplifiers each with a gain of 30 are cacaded.

Question # 3

The binding energy to pull the deuterium H apart into a proton and a neutron is equal to.

Question # 4

Which of the following detectors can count fast and operate at low voltage.

Question # 5

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

Question # 6

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

Question # 7

Emitter follower amplifier is an example of.

Question # 8

Binding energy per nucleon is.

Question # 9

LASER is a device which can produce.

Question # 10

The total energy of an electron in an orbit around the nucleus is.

Question # 11

As oscillator is basically an amplifier with loop gain

Question # 12

Which six particles and their antiparticles interact by the weak interaction.

Question # 13

Which of the following has greatest binding energy per nucleon.

Question # 14

Though the wavelength of X-rays is smaller than that of visible light yet the speed of X-rays in vacuum is.

Question # 15

X-rays used for

Question # 16

The neutral atoms of all isotopes of the same element contain the same numbers of.

Question # 17

The chain reaction is controlled by a series of rods usually made of.

Question # 18

The energy in electron volts necessary to remove the most loosely bound electron from the neutral atom is known as.

Question # 19

In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.

Question # 20

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

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 What is the relativistic version of the Schrodinger equation.
A. Klein Gordon equation
B. Laplace equation
C. Quadratic equation
D. Binomial equation.
3 The binding energy per nucleon for uranium is about.
A. 7.7 MeV
B. 9.6 MeV
C. 13.6 MeV
D. 21.6 MeV
4 Cs - 137 is a radioisotope used ot determine the thickness of the walls of steel pipes Cs 137 is chosen because it emits
A. Radiowaves
B. Alpha particles
C. Beta particles
D. gama particles
5 The most convenient unit for energy at the atomic level is.
A. Joule
B. Watt second
C. Newton metre
D. Electron volt
6 The force that bonds protons and neutrons together int he nucleus despite the electrical repulsion of the protons is called.
A. Molecular force
B. Nuclear force
C. Atomic force
D. Gravitational force
7 Which of the following describes that the time interval between two events may be different in different of references
A. Simullaneously
B. Time dilation
C. Length contraction
D. Mass variation
8 The process of pair production will take place if the energy of photon is greater than
A. 0.21 MeV
B. 0.51 MeV
C. 1.51 MeV
D. 1.21 MeV
9 Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.
A. Time period
B. Frequency
C. Voltage gain
D. phase angle
10 The wavelength of X-rays is of the ofder of.
A. 10-14 m
B. 10-10 m
C. 10-9 m
D. 10-6 m

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