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ICS Part 2 Physics
Chapter 20 Test
Start Chapter 20 Test
ICS Part 2 Physics Chapter Wise Test
(English Medium)
MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 20 Online MCQ's Test"
Try The MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 20 Online MCQ's Test"
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Total Questions17
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Time Allowed20
Physics ICS Part 2 Chapter 20 Online MCQ's Test
00:00
Question # 1
Life time of metastable states is
Question # 2
Balmer Empirical formula explains the electromagnetic radiation of any excited atom in terms of their.
Question # 3
The value of Rydberg constant is
Question # 4
Radius of first Bohr's orbit is.
Question # 5
We can find from de Broglie formula
Question # 6
Reflecting mirrors in laser is used to
Question # 7
Balmer series lies in
Question # 8
Laser is a beam of light which is
Question # 9
The following gas was identified in the sun using spectroscopy
Question # 10
Charge on an atom is:
Question # 11
When an electron in an atom goes from a lower to higher orbit its:
Question # 12
Black Body radiation spectrum is an example of:
Question # 13
The value of Rydberg constant is:
Question # 14
In an electronic transition atom cannot emit.
Question # 15
Bremsstrahlung radiation are examples of
Question # 16
The first laser was built by
Question # 17
The Balmer series is obtained when all the transition of electrons terminate on
ICS Part 2 Physics Chapter 20 Online Test MCQ's
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FSc Part II Physics Chapter 0 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Which of the following series of hydrogen spectrum lies in ultra violet region. |
A. Lyman sereis
B. Paschen series
C. Balmar series
D. Bracket series
|
| 2 | The energy of 4th Orbit in hydrogen atom is. |
A. -2.51 eV
B. -3.50 eV
C. -13.60 eV
D. -0.85 eV
|
| 3 | Hydrogen atom spectrum does not lie in |
A. Ultraviolet region
B. Visible region
C. Infrared region
D. X ray region
|
| 4 | Boher proposed his atomic model in: |
A. 1910
B. 1911
C. 1912
D. 1913
|
| 5 | Paschen series lies in the |
A. Far ultraviolet region
B. Visible region
C. Ultraviolet region
D. Inferred region
|
| 6 | Charge on positron is: |
A. Negative
B. Positive
C. Netural
D. None of these
|
| 7 | The first spectral lines were discovered in 1885, were |
A. Paschen series
B. Balmer series
C. Pfund series
D. Bracket series
|
| 8 | The shortest wave length is Bracket series has wave length. |
A. 16/Rn
B. Rn/16
C. 16 Rn
D. 4 Rn
|
| 9 | An atom can reside in excited state for |
A. 10-8 second
B. One second
C. 10-10 second
D. More than one second
|
| 10 | In Helium Neon laser, the discharge tube is filled with |
A. 80% He, 20% Neon
B. 85% He, 15% Neon
C. 83% He, 17% Neon
D. 90% He, 10% Neon
|
Test Questions
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