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 Black Body radiation spectrum is an example of:
  • A. Atomic spectra
  • B. Line spectra
  • C. Continuous spectra
  • D. None of above
2 The following gas was identified in the sun using spectroscopy
  • A. Hydrogen
  • B. Helium
  • C. Carbon
  • D. Nitrogen
3 The velocity of electron moving is 1st orbit of hydrogen atom is:
  • A. 2.09 x 10<sup>6</sup> ms<sup>-1&nbsp;</sup>
  • B. 2.18 x10<sup>6</sup> ms<sup>-1</sup>
  • C. 2.19 x 10<sup>6</sup> ms<sup>-1</sup>
  • D. 3.18 x10<sup>6</sup> ms<sup>-1</sup>
4 Target material used in x-rays tube have following properties.
  • A. High atomic number and high melting pouint
  • B. High atomic number and low melting pouint
  • C. Low atomic number and low melting pouint
  • D. High atomic number only
5 In an electronic transition atom cannot emit.<div></div>
  • A. Infrared radiations
  • B. Visible radiations
  • C. Ultraviolet radiations
  • D. Gama radiations
6 The typical nuclei are less than:
  • A. 10<sup>-16</sup>m
  • B. 10<sup>-14</sup>m
  • C. 10<sup>-12</sup>m
  • D. 10<sup>-10</sup>m
7 Helium Neon Laser Beam emitted from discharge tube has a colour.
  • A. Blue
  • B. Green
  • C. Red
  • D. Black
8 The value of Rydberg constant is
  • A. 1.0974 x 10<sup>7</sup> m<sup>-1</sup>
  • B. 1.0974 x 10<sup>-7</sup> m<sup>-1</sup>
  • C. 1.0974 x 10<sup>6</sup> m<sup>-1</sup>
  • D. 1.0974 x 10<sup>-6</sup> m<sup>-1</sup>
9 The Balmer series is obtained when all the transition of electrons terminate on
  • A. 1<sup>st</sup> orbit
  • B. 2nd orbit
  • C. 3rd orbit
  • D. 4th orbit
10 In Helium Neon laser, discharge tube is filled with Neon gas.
  • A. 10%
  • B. 15%
  • C. 85%
  • D. 90%

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

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
H

Hamza Goraya

Lahore19 - Mar - 2025

16/17
01 Mins 36 Sec
A

Abubakar Ahmad Rafi

Lahore20 - Mar - 2025

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M

Muhammad Hazim Abdullah

Lahore27 - Apr - 2025

16/17
01 Mins 39 Sec
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Sania Rashid

Lahore22 - Feb - 2025

16/17
01 Mins 54 Sec
A

Asma Waheed

Lahore20 - Feb - 2025

16/17
02 Mins 10 Sec
H

Hamza Khaleel

Lahore03 - May - 2025

16/17
03 Mins 08 Sec
A

Asma Waheed

Lahore20 - Feb - 2025

16/17
03 Mins 33 Sec
A

Asma Waheed

Lahore20 - Feb - 2025

16/17
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Nazia Farhat

Lahore26 - Apr - 2025

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Zainab Zana

Lahore08 - Mar - 2025

15/17
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Asma Najeeb

Lahore20 - Feb - 2025

15/17
01 Mins 43 Sec
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Muhammad Hazim Abdullah

Lahore19 - Mar - 2025

15/17
01 Mins 44 Sec

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