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

Low frequency response of an amplifier is mainly limited by.

Question # 2

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

Question # 3

Which one of the following has the largest wavelength.

Question # 4

An oscillator is basically an amplifier with loop gain

Question # 5

The path of electron in Rutherford atomic model according to classical theory a.

Question # 6

A single quantum of electromagnetic radiation is termed as.

Question # 7

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

Question # 8

The electrons behave as waves, because they can .

Question # 9

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 # 10

An operational amplifier can be used as a

Question # 11

The hyperfine lines in the spectrum relates to

Question # 12

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

Question # 13

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

Question # 14

Which quantity remains fixed in isobars.

Question # 15

A solid state detector is basically

Question # 16

In which reaction two or more small light nuclei nuclei come together or fuse to form a large nucleus.

Question # 17

What is the quantitative description of the effect of radiation on the living tissue.

Question # 18

Radioactive substances do not emit

Question # 19

Which of the following is deflected by an electric field.

Question # 20

LASER is a device which can produce.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The part of theory of relativity which deals with accelerated bodies is called.
A. special theory of relativity
B. General theory of relativity
C. Lorentz's theory of relativity
D. Galilean theory of relativity
2 Lines of Balmer series are emitted by hydrogen atom when the electron jumps from
A. The first orbit to any other orbit
B. Higher orbits to second orbit
C. Higher orbits to first orbit
D. The third orbit to higher orbit
3 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
4 If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.
A. Larger
B. Smaller
C. Zero
D. Infinity
5 When we pass a radiation from a radioactive material through an electric field.
A. All three kinds of rays will be deflected
B. Only the Gama rays are deflected
C. The Alpha and Beta particles are deflected
D. Only the alpha particles are deflected
6 How many terminals does a BJT have.
A. 1
B. 2
C. 3
D. 4
7 The electron behave an waves because
A. They can be diffracted by a crystal
B. They can produce ions in gases
C. They can be deflected by magnetic field
D. They can be deflected by electric field
8 The relationship between mass number atomic number and neutron number is.
A. A = Z + N
B. A = Z - N
C. Z = A + N
D. N = Z - A
9 Cosmic rays mostly comprise of
A. Neutral particles
B. Negative charged particles
C. Positively charged particles
D. Ions
10 The rest mass of a particle is independent of the
A. Wavelength of the particle
B. Mass of the particle
C. Speed of the particle
D. Energy of the particle

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