12th class Physics chapter 20 online mcq test with answers for ICS part 2 Physics Chapter 20 (Atomic Spectra)

2nd Year Physics Chapter 20 Online MCQ Test for 12th Class Physics Chapter 20 (Atomic Spectra)

This online test contains MCQs about following topics:

- Atomic Spectra
- Bohr's Model of the Hydrogen Atom
- Inner Shell Transitions and Characteristic X-Rays
- Uncertainty Within the Atom
- Laser

+ View More detail

Ics Part 2 Physics Chapter 20 Test

Start Physics Chapter 20 Test

ICS Part 1 English Medium Subjects

ICS Part 1 Urdu Medium Subjects

2nd Year Physics Chapter 20 Online MCQ Test for 12th Class Physics Chapter 20 (Atomic Spectra)

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	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
3	In an electronic transition atom cannot emit.<div></div>	A. Infrared radiations B. Visible radiations C. Ultraviolet radiations D. Gama radiations
4	The temperature of core of nuclear reactor is:	A. 1100°C B. 1200°C C. 1300°C D. 1400°C
5	X-rays were discovered by	A. Curie B. Henry Becquerel C. Rontgen D. None of these
6	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>
7	For an atom of hydrogen atom the radius of the first orbit is given by:	A. H/me<sup>2</sup> B. me/4h<sup>2</sup> C. h2/4<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π<sup>2</sup> kme<sup style="">2</sup></span> D. h<sup>2</sup> me<sup>2</sup>
8	Electron volt is unit of:	A. Chemical energy B. Potential energy C. Nuclear energy D. heat energy
9	The first spectral lines were discovered in 1885, were	A. Paschen series B. Balmer series  C. Pfund series D. Bracket series
10	The velocity of electron moving is 1st orbit of hydrogen atom is:	A. 2.09 x 10<sup>6</sup> ms<sup>-1 </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>

Top Scorers of Ics Part 2 Physics Chapter 9 Test Online

Muhim Akhtar

Lahore18 - Mar - 2023

14/17

02 Mins 40 Sec

Muhim Akhtar

Lahore18 - Mar - 2023

13/17

02 Mins 53 Sec

Shafiq Ahmad

Lahore22 - Feb - 2023

13/17

03 Mins 39 Sec

Taimoor

Lahore30 - Jan - 2023

13/17

04 Mins 29 Sec

Hamza Abid

Abbottabad14 - Mar - 2023

12/17

10 Mins 50 Sec

Laiba Nadeem

Lahore28 - Jan - 2023

11/17

04 Mins 05 Sec

Asad Hussain

Lahore01 - Mar - 2023

10/17

01 Mins 36 Sec

Vanadium Oxide

Lahore11 - Mar - 2023

10/17

05 Mins 32 Sec

Jani Leo

Lahore07 - Mar - 2023

10/17

08 Mins 26 Sec

Chapterwise Lists

Chapter Name	Questions	PDF File
Ics Part 2 Physics Chapter 1 Test Online	17 Questions
Physics Fsc Part 2 Chapter 1 Online Test	17 Questions
Ics Part 2 Physics Chapter 2 Test Online	17 Questions
Physics Fsc Part 2 Chapter 2 Online Test	17 Questions
Ics Part 2 Physics Chapter 3 Test Online	17 Questions
Physics Fsc Part 2 Chapter 3 Online Test	17 Questions
Ics Part 2 Physics Chapter 4 Test Online	17 Questions
Physics Fsc Part 2 Chapter 4 Online Test	17 Questions
Ics Part 2 Physics Chapter 5 Test Online	17 Questions
Physics Fsc Part 2 Chapter 5 Online Test	17 Questions
Ics Part 2 Physics Chapter 6 Test Online	17 Questions
Physics Fsc Part 2 Chapter 6 Online Test	17 Questions
Ics Part 2 Physics Chapter 7 Test Online	17 Questions
Physics Fsc Part 2 Chapter 7 Online Test	17 Questions
Ics Part 2 Physics Chapter 8 Test Online	17 Questions
Physics Fsc Part 2 Chapter 8 Online Test	17 Questions
Ics Part 2 Physics Chapter 9 Test Online	17 Questions
Physics Fsc Part 2 Chapter 9 Online Test	17 Questions
Ics Part 2 Physics Chapter 10 Test Online	17 Questions
Physics Fsc Part 2 Chapter 10 Online Test	17 Questions