20th Chapter

FSC Part 2 Physics Chapter 20 Online Test MCQ's

Second Year Physics Chapter 20 Online MCQ Test for 2nd Year Physics Chapter 20 Atomic Spectra Preparation

FSC Part 2 Physics
Chapter 20 Test

Start Chapter 20 Test

Second Year Physics Chapter 20 Online MCQ Test for 2nd Year Physics Chapter 20 Atomic Spectra Preparation

Sr. # Questions Answers Choice
1 An atom can reside in excited state for
  • A. 10<sup>-8</sup> second
  • B. One second
  • C. 10<sup>-10</sup> second
  • D. More than one second
2 The shortest wave length is Bracket series has wave length.
  • A. 16/Rn
  • B. Rn/16
  • C. 16 Rn
  • D. 4 Rn
3 X- ray diffraction reveals that these are
  • A. Particle type
  • B. Wave type
  • C. Both wave and particle
  • D. None of above
4 _____ has the largest de Broglie wavelength at same speed.
  • A. Proton
  • B. Alpha particle
  • C. Carbon atom
  • D. Electron
5 Balmer Empirical formula explains the electromagnetic radiation of any excited atom in terms of their.
  • A. Energy
  • B. Mass
  • C. Wave length
  • D. Momentum
6 Radius of first Bohr's orbit is.
  • A. 0.053 nm
  • B. 0.053 mm
  • C. 0.053 micro meter
  • D. 0.053 m
7 Energy produced due to fission of uranium atom is:
  • A. 500MeV
  • B. 200MeV
  • C. 700MeV
  • D. 750MEV
8 Laser can be made by creating.
  • A. Meta stable
  • B. Population inversion
  • C. Excited state
  • D. All of these
9 The temperature of core of nuclear reactor is:
  • A. 1100°C
  • B. 1200°C
  • C. 1300°C
  • D. 1400°C
10 Production of x rays is reverse process of
  • A. Photo electric effect
  • B. Compton effect
  • C. An nihilation
  • D. Pair production

Top Scorers of Physics FSC Part 2 Chapter 20 Online MCQ's Test

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Umar Hassan

Lahore28 - Jun - 2025

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A

Awais Farooq

Lahore20 - Apr - 2025

16/17
50 Sec
A

Awais Farooq

Lahore20 - Apr - 2025

16/17
55 Sec
4

416 Alina Abbas

Lahore29 - Apr - 2025

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01 Mins 36 Sec
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Muhammad Hazim Abdullah

Lahore27 - Apr - 2025

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Hamza Khaleel

Lahore03 - May - 2025

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Nazia Farhat

Lahore26 - Apr - 2025

16/17
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Muhammad Hazim Abdullah

Lahore27 - Apr - 2025

15/17
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Hamza Khaleel

Lahore03 - May - 2025

15/17
03 Mins 35 Sec
A

Awais Farooq

Lahore20 - Apr - 2025

14/17
42 Sec
A

Awais Farooq

Lahore20 - Apr - 2025

14/17
01 Mins 07 Sec
A

Awais Farooq

Lahore20 - Apr - 2025

14/17
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A

Awais Farooq

Lahore20 - Apr - 2025

14/17
01 Mins 08 Sec
U

Umar Hassan

Lahore28 - Jun - 2025

14/17
01 Mins 55 Sec
A

Aqleema Noor

Lahore13 - May - 2025

14/17
01 Mins 57 Sec

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