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

Alpha particles emitted from a radioactive material are.

Question # 2

Positron are produced during.

Question # 3

In a fission reactor which particle causes a uranium -235 nucleus to split.

Question # 4

X-rays spectrum may be

Question # 5

When we pass a radiation from a radioactive material through an electric field.

Question # 6

The energy in an electromagnetic wave is carried in the units called.

Question # 7

The ionization potential of hydrogen atom is.

Question # 8

Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to.

Question # 9

In a Nuclear reactor which material is often used as modeerator.

Question # 10

The two elements with same number of electrons but different mass number are called.

Question # 11

During transition, atom cannot emit

Question # 12

The total energy of the hydrogen atom is

Question # 13

The rest mass of a particle is independent of the

Question # 14

During the alpha decay process

Question # 15

Radio carbon in the atmosphere is produced by the bombardment of.

Question # 16

Why FET amplifiers are called voltage controlled devices.

Question # 17

The possible values of principal quantum number are.

Question # 18

Why is a capacitor resistor combination used in oscillators in grid circuit.

Question # 19

The SI unit of absorbed dose in.

Question # 20

In a transistor which one is very thin.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Which of the following wavelength lies in X-rays region.
A. 1 A
B. 100 A
C. 1,000 A
D. 10,000 A
2 According to Max. Planck, energy is released or absorbed in discrete packets called.
A. quanta
B. Meson
C. Energy shells
D. Position
3 The Beta particles move along.
A. Straight path
B. Curved path
C. Zig Zag path
D. Circular path
4 Radius of the Bother's orbit is r the radius of second orbit will be.
A. 2 r
B. 3 r
C. 4 r
D. 8 r
5 Radio carbon in the atmosphere is produced by the bombardment of.
A. Oxygen by high energy neutrons
B. Oxygen by high energy protons
C. Nitrogen by high energy protons
D. Nitrogen by high energy neutrons
6 The phenomenon of radioactivity is associated with
A. Decay of nucleus
B. Decay of atoms
C. Fusion of nuclei
D. Emission of electrons
7 Which of the following is not a mode of radioactive decay.
A. Positron emission
B. Electron capture
C. Fusion reaction
D. A decay
8 A device used to determine mass of an isotope quite accurately is known as.
A. Spectrometer
B. Mass spectrometer
C. Mass detector
D. Electronic balance
9 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
10 Which experiment confirmed the de Broglie hypothesis.
A.
Double slit experiment
B. Division germier experiment
C. Schrodinger's Cat experment
D. Bohr's experiment

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