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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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Total Questions20
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Time Allowed20
PPSC Physics Topic 7 Modern Physics
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Question # 1
When a platinum wire is heated of 1600 oC, it becomes
Question # 2
The critical mass of fissionable uranium -235 can be reduced by
Question # 3
The decay to form other nuclides by emitting particles and electromagnetic radiations by unstable nuclides is called.
Question # 4
Which given element has lowest work function
Question # 5
Why hydrogen atom does not emit x-rays.
Question # 6
Which one of the following is a convenient energy unit to express the energy of sub atomic particles.
Question # 7
Radius of the Bother's orbit is r the radius of second orbit will be.
Question # 8
An increase in frequency above threshold frequency results in.
Question # 9
The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called.
Question # 10
Which of the following phenomenon cannot be understood by quantum theory.
Question # 11
The phenomenon in which a photon of frequency 'f' is scattered by an electron and the scattered photon has frequency f <f is known as.
Question # 12
The SI unit of decay constant is.
Question # 13
The electron behave an waves because
Question # 14
The critical mass of a fission reaction is.
Question # 15
Compton scattering experiment seemed to indicate that radiation had
Question # 16
Alpha particles emitted from a radioactive material are.
Question # 17
The loss of mass in a.m.u in a nuclear change can be calculated from energy involved in MeV by
Question # 18
Which of the following circuits is used as local oscillator in radio receivers.
Question # 19
Which of the following particles leave no trail in a cloud chamber.
Question # 20
The rest mass of a particle is independent of the
Prepare Complete Set Wise PPSC Physics Topic 7 Modern Physics MCQs Online With Answers
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Set 1
20 Questions
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Set 2
20 Questions
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Set 3
20 Questions
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Set 4
20 Questions
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Set 5
20 Questions
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Set 6
20 Questions
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Set 7
20 Questions
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Set 8
20 Questions
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Set 9
20 Questions
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Set 10
20 Questions
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Set 11
20 Questions
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Set 12
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Set 13
20 Questions
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Set 14
20 Questions
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Set 15
20 Questions
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Set 16
20 Questions
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Set 17
20 Questions
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Set 18
20 Questions
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Set 19
20 Questions
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Set 20
20 Questions
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Set 21
3 Questions
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Top Scorers Of PPSC Physics Topic 7 Modern Physics MCQ`s Test
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Q Queen Fatima 22 - Aug - 2023 00 Min 47 Sec 20/20 -
M mahnoor javaid 25 - Sep - 2022 08 Min 10 Sec 17/20 -
S Sanina Arzoo 07 - Mar - 2023 04 Min 02 Sec 15/20 -
F Fiza Farooq 05 - Dec - 2022 06 Min 10 Sec 15/20 -
S Saira Malik 25 - Oct - 2022 00 Min 02 Sec 14/20 -
A Asma Azam 21 - Jan - 2022 03 Min 57 Sec 14/20 -
M Muhammad Zeshan 20 - Sep - 2024 06 Min 17 Sec 14/20 -
S SHERAZ AHMAD 17 - Oct - 2024 08 Min 57 Sec 14/20 -
W Waqar Ali 19 - Dec - 2023 11 Min 30 Sec 14/20 -
W wa-Qul rabbi Zidni ilma 04 - Dec - 2023 04 Min 59 Sec 13/20 -
N Nida Ashfaq 04 - Oct - 2022 06 Min 48 Sec 13/20 -
M Muhammad Ahsaan 26 - Aug - 2022 10 Min 12 Sec 13/20 -
F fida hussain 27 - Apr - 2023 04 Min 29 Sec 12/20 -
S Shaf Ashrafali 08 - Aug - 2024 04 Min 55 Sec 12/20 -
S shahid habib 31 - Mar - 2024 06 Min 29 Sec 12/20
PPSC Class Physics Chapter 7 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | During the alpha decay process |
A. A neutron is emitted
B. a electron is emitted
C. A helium core is emitted
D. A proton core is emitted
|
| 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 | Which type of amplifier causes minimum drain of power supply. |
A. Class -A
B. Class -B
C. Class-C
D. Class -AB
|
| 4 | One gray is equal to. |
A. 1 J-1 kg -1
B. 1 J -1 kg -2
C. 1 J 1 -g-1
D. 1 j kg -2
|
| 5 | A gama ray of energy 1900 MeV is absorbed by |
A. Proton antiproton pair
B. Electron positron pair
C. Producing heat in the substance
D. The orbit
|
| 6 | Which both elements are good for nuclear fission. |
A. Thorium an uranium
B. Thorium and radium
C. Plutonium and uranium
D. Plutonium and throrium
|
| 7 | The nucleus of tritium is called. |
A. Proton
B. Triton
C. Deuleron
D. Positron
|
| 8 | The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is. |
A. Directly proportional to n
B. Directly proportional to n2
C. Inversely proportional to n
D. Inversely proportional to n2
|
| 9 | 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
|
| 10 | In a nuclear reactor chani reaction is controlled by introducing. |
A. Iron rods
B. Cadmium rods
C. Graphite rods
D. Platinum rods
|
Test Questions
