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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
At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.
Question # 2
Atomic reactor is based on
Question # 3
The SI unit of current gain is.
Question # 4
An operational amplifier have how many input terminals.
Question # 5
Why FET amplifiers are called voltage controlled devices.
Question # 6
The mass of proton is equal to.
Question # 7
In Compton's effect the change in wavelength of a scattered photon is called.
Question # 8
The process of conversation of a photon into an electron and a position is called.
Question # 9
The continuous x rays spectrum is obtained due to
Question # 10
The process of pair production will take place if the energy of photon is greater than
Question # 11
Hydrogen bomb is based on
Question # 12
The total energy of an electron in an orbit around the nucleus is.
Question # 13
The mass defect of Bohr's atomic model is
Question # 14
What is the effect of electric and magnetic fields on X-rays
Question # 15
Which six particles and their antiparticles interact by the weak interaction.
Question # 16
The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.
Question # 17
The half life of a given radioactive isotope is 10 years The original mass of the isotope is 12 g What mass of this isotope remains un decayed after 20 years.
Question # 18
The converse of pair production is
Question # 19
The particles less in mass than protons are
Question # 20
When using the formula E = h lambda what unit should energy have.
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
20 Questions
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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 Physics Chapter 7 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Which of the following is required for maintaining sustained chain reaction. |
A. Neutrons
B. Protons
C. Electrons
D. Photons
|
| 2 | Which one of the following is a neutron absorber |
A. Pb
B. Cd
C. Cu
D. Ag
|
| 3 | The critical mass of a fissionable material is. |
A. 1 kg
B. 10 kg
C. 100 kg
D. 1.,000 kg
|
| 4 | Which quantity remains fixed in isobars. |
A. Mass number
B. Atomic number
C. Number of neutrons
D. Number of protons
|
| 5 | Isotopes are the atoms of the same elements which contain equal number of. |
A. Nucleus
B. Neutrons
C. Protons
D. Electrons
|
| 6 | Marie Curie and Pierre Curie discovered two new radioactive elements which are. |
A. Uranium and radkum
B. Platinum and radium
C. Polonium and radium
D. Crypton and radon
|
| 7 | Besides U 235 what else is needed for making as atomic bomb. |
A. Electons
B. Protons
C. Neutrons
D. Photons
|
| 8 | Which six particles and their antiparticles interact by the weak interaction. |
A. Leptons
B. Hadrons
C. Muons
D. pi mesons
|
| 9 | The half life of radium -226 is |
A. 1620 years
B. 45 x 109 years
C. 3.8 days
D. 23.5 minutes
|
| 10 | A factory buy 100 g of a radioactive chemical with a half life of 5 years which decays to a stable compound How much of the chemical will still be radioactive 10 years time. |
A. 25 g
B. 50 g
C. 75 g
D. 100 g
|
Test Questions