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

An operational amplifier have how many input terminals.

Question # 2

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

Question # 3

Which term given below refers to the concept moving clocks run slower than clocks at rest w.r.t an observer.

Question # 4

There are how many types of forces or interactions.

Question # 5

The helium nucleus does not contain

Question # 6

The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is.

Question # 7

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

Question # 8

Which of the following is formed by decay of a free neurton.

Question # 9

A transistor can be used as

Question # 10

Which of the following phenomenon cannot be understood by quantum theory.

Question # 11

In an electronic transition atom cannot emit

Question # 12

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

Question # 13

One gray is equal to.

Question # 14

At what speed the mass of a body will be doubled.

Question # 15

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

Question # 16

The band width of an audio amplifier is.

Question # 17

The decay to form other nuclides by emitting particles and electromagnetic radiations by unstable nuclides is called.

Question # 18

X-ray are

Question # 19

The necessary condition for nuclear fusion is.

Question # 20

The converse of pair production is

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 x-rays cannot produce
A. Photoelectron
B. Compton electron
C. Electron positron pair
D. All of these
2 At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.
A. 0.3 v
B. 0.5 V
C. 0.7 V
D. 0.9 V
3 The Rutherford atom according to classical theory is
A. Stable
B. Unstable
C. Partially stable
D. Quantized
4 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
5 The critical mass of a fission reaction is.
A. The mass to start a nuclear fission reaction
B. The minimum mass for chain reaction
C. The size of the reactor core
D. The size of fuel plus the size of moderator
6 The process by which nuclei emit a ,b and gama rays in order to attain stability is called.
A. Radioactive disintegration
B. Radio activity
C. B decay
D. Radioactive transmulation
7 The output of two input OR gate is zero only when its.
A. Either input is one
B. Either input is zero
C. Both inputs are zero
D. Both inputs are one
8 In order to reduce uncertainty in momentum one must use light of.
A. Short wavelength
B. Large wavelength
C. Wavelength of intermediate value
D. Wavelength of any value
9 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
10 The transition of inner shell electrons in heavy atoms gives rise to the emission of.
A. Low energy b-particle
B. High energy b-particle
C. High energy X- rays
D. High energy gama rays

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