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 SI unit of current gain is.

Question # 2

Most widely used types of gas LASER are

Question # 3

X-rays are good for imagining

Question # 4

The energy that must be added to separate the nucleus is called.

Question # 5

The gama rays have

Question # 6

In n-p-n transistor the current flows in the direction from

Question # 7

In the experiment of production of X rays electrons are accelerated towards the anode by

Question # 8

The SI unit of absorbed dose in.

Question # 9

Alpha particles emitted from a radioactive material are.

Question # 10

In which of the following studies x-rays are not helpful.

Question # 11

Bohr's atomic model assumes

Question # 12

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 # 13

The mass of proton is equal to.

Question # 14

A transistor can be used as

Question # 15

Which one of the following is a neutron absorber

Question # 16

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

Question # 17

In Compton's effect the change in wavelength of a scattered photon is called.

Question # 18

The nucleus of tritium is called.

Question # 19

the gain of an amplifier is independent of

Question # 20

In fission reaction, heavy water is used as a

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The emission of Beta particle from protonium -218 results in the formation of.
A. Protactinium -231
B. Thorium -232
C. Astatine -218
D. Radon -222
2 Bohr's atomic model assumes
A. Nucleus is of infinite mass and is at rest
B. electron in a quantized orbit will not radiate energy
C. Mass of electron remains the same
D. All of the above
3 Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.
A. 2.4 J
B. 4.2 J
C. 12.3 eV
D. 13.6 eV
4 The simple form of particle accelerator is.
A. Cathode ray tube
B. Oscillator
C. Amplifier
D. Phase locked loop
5 The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called.
A. The photoelectric effect
B. The zeeman effect
C. The Compton effect
D. Quantum effect
6 Nuclear force as compared to electrostatic force is.
A. Weaker and long range
B. Weaker and short range
C. Stronger and longer range
D. Stronger and short range
7 Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.
A. Time period
B. Frequency
C. Voltage gain
D. phase angle
8 The term used for the emission of electrons when light strikes a surface.
A. The zeeman effect
B. The photo electric effect
C. Skin effect
D. Compton effect
9 What is the scale for measurement of Banbridge mass spectrograph.
A. Linear
B. Inverse
C. Exponential
D. Logarithmic
10 The number of electrons in U nucleus are.
A. 92
B. 235
C. zero
D. 143

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