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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
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 # 2
What will be excitation energy in the third orbit of hydrogen atom.
Question # 3
In which of the following studies x-rays are not helpful.
Question # 4
In which reaction two or more small light nuclei nuclei come together or fuse to form a large nucleus.
Question # 5
In a photocell, certain metals emit electrons for
Question # 6
LED is a p-n junction that emits
Question # 7
A perfect back body
Question # 8
Alpha particles are
Question # 9
An oscillator is basically an amplifier with loop gain
Question # 10
The energy equivalent of 1 kg of matter a
Question # 11
Which of the following quantities is discrete according to Bohr's hypothesis.
Question # 12
Which of the following is the most massive particle.
Question # 13
The phenomenon of radioactivity is associated with
Question # 14
In annitilation of matter, positron and electron pair disappears into two
Question # 15
The photons emitted in inner shell transition are.
Question # 16
When an object moves with a very high speed the length in the direction of motion.
Question # 17
The absorption of X-rays in a given material follows.
Question # 18
If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.
Question # 19
LASER is a device which can produce.
Question # 20
Which of the following phenomenon cannot be understood by quantum theory.
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 basic transistor configuration. |
A. CB
B. CC
C. CE
D. All of these
|
| 2 | The energy of neutrons obtained during a fission reaction is. |
A. 0.1 MeV
B. 1 KeV
C. 1 MeV
D. Zero
|
| 3 | Usually in an operational amplifier the inputs used are of |
A. Equal voltage and same polarity
B. Equal voltage and opposite polarity
C. Different voltage and same polarity
D. Different voltage and opposite polarity
|
| 4 | In an electronic transition atom cannot emit |
A. Gama rays
B. Visible rays
C. Infrared rays
D. Ultraviolet rays
|
| 5 | The ionization energy for hydrogen atom is |
A. -11.6 eV
B. -12.6 eV
C. -13.6 eV
D. -19.6 eV
|
| 6 | The SI unit of absorbed dose in. |
A. Bel
B. Weber
C. Rem
D. Grey
|
| 7 | The minimum amount of energy in an individual electron has to gain to escape from a particular surface is called. |
A. Threshold frequency
B. work function
C. Wave number
D. Kinetic energy
|
| 8 | 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
|
| 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 | The most abundant isotope of neon is. |
A. Neon -20
B. Neon -21
C. Neon -22
D. Both a and c
|
Test Questions
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