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

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Ics Part 2 Physics Chapter 20 Test

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ICS Part 1 English Medium Subjects

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

Sr. #	Questions	Answers Choice
1	When an electron in an atom goes from a lower to higher orbit its:	A. K.E increases , P.E decreases B. K.E increases , P.E increases C. K.E decreases , P.E increases D. K.E decreases , P.E decreases
2	1 rem =	A. 0.001 SV B. 0.01 SV C. 0.1 SV D. 1.01 SV
3	The shortest wave length is Bracket series has wave length.	A. 16/Rn B. Rn/16 C. 16 Rn D. 4 Rn
4	Charge on positron is:	A. Negative  B. Positive C. Netural D. None of these
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	The unit of Rh is.	A. ms-1 B. m C. m<sup>2</sup> D. m<sup>-1</sup>
7	Which of the following is one of the spectral series of atomic hydrogen?	A. Brockett series B. Balmer series C. P fund series D. All of above
8	In an electronic transition atom cannot emit.<div></div>	A. Infrared radiations B. Visible radiations C. Ultraviolet radiations D. Gama radiations
9	If electron jumps from second orbit to first orbit in hydrogen atom it emits photon of.	A. 3.40 eV B. 10.20 eV C. 13.6 eV D. 3.8 eV
10	Hydrogen atom spectrum does not lie in	A. Ultraviolet region B. Visible region C. Infrared region D. X ray region

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