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 Paschen series lies in the
  • A. Far ultraviolet region
  • B. Visible region
  • C. Ultraviolet region
  • D. Inferred region
2 Balmer series lies in region of electromagnetic spectrum.
  • A. Infrared
  • B. Visible
  • C. Ultraviolet
  • D. Fra infrared
3 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
4 If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be
  • A. 136.0 volt
  • B. 3.0 volt
  • C. 13.6 volt
  • D. None of these
5 In according with Bohr's theory the K.E of the electron is equal to:
  • A. ke<sup>2</sup>/2r
  • B. Ze<sup>2</sup>/r
  • C. Ze<sup>2</sup>/r<sup>2</sup>
  • D. Ze<sup>2</sup>/2r<sup>2</sup>
6 Photons emitted in inner shell transition are.
  • A. Continuous X -rays
  • B. Discontinuous X rays
  • C. Characteristic X rays
  • D. Energetic X rays
7 First spectral series of hydrogen atom was discovered by
  • A. Lyman
  • B. Rydberg
  • C. Balmer
  • D. Paschen
8 Laser is a beam of light which is
  • A. Monochromatic
  • B. Coherent
  • C. Unidirectional
  • D. All of these
9 The radius of 10th orbit in hydrogen atom is.
  • A. 0.053 nm
  • B. 0.53 nm
  • C. 5.3 nm
  • D. 53 nm
10 Helium Neon Laser Beam emitted from discharge tube has a colour.
  • A. Blue
  • B. Green
  • C. Red
  • D. Black

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

U

Umar Hassan

Lahore28 - Jun - 2025

17/17
02 Mins 05 Sec
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

16/17
01 Mins 36 Sec
M

Muhammad Hazim Abdullah

Lahore27 - Apr - 2025

16/17
01 Mins 39 Sec
H

Hamza Khaleel

Lahore03 - May - 2025

16/17
03 Mins 08 Sec
N

Nazia Farhat

Lahore26 - Apr - 2025

16/17
06 Mins 10 Sec
M

Muhammad Hazim Abdullah

Lahore27 - Apr - 2025

15/17
02 Mins 39 Sec
H

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
01 Mins 07 Sec
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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