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FSC Part 2 Physics
Chapter 20 Test
Start Chapter 20 Test
FSC Part 2 Physics Chapter Wise Test
(English Medium)
MCQ's Test For Chapter 0 "Physics FSC Part 2 Chapter 20 Online MCQ's Test"
Try The MCQ's Test For Chapter 0 "Physics FSC Part 2 Chapter 20 Online MCQ's Test"
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Total Questions17
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Time Allowed20
Physics FSC Part 2 Chapter 20 Online MCQ's Test
00:00
Question # 1
The unit of Rh is.
Question # 2
X- ray diffraction reveals that these are
Question # 3
The series in infrared region is:
Question # 4
The shortest wave length is Bracket series has wave length.
Question # 5
The rest mass x ray photon is
Question # 6
For Holography we use
Question # 7
The value of Rydberg constant is:
Question # 8
Balmer series lies in region of electromagnetic spectrum.
Question # 9
The Balmer series is obtained when all the transition of electrons terminate on
Question # 10
In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to:
Question # 11
Paschen series lies in the
Question # 12
Which of the following series of hydrogen spectrum lies in ultra violet region.
Question # 13
The first orbit in the hydrogen atom has a radius.
Question # 14
An electron in H -atom is excited from ground state n=4 , How many spectral lines are possible in this case.
Question # 15
Which series lies in the ultraviolet region.
Question # 16
If 13.6 eV energy is required to ionize the hydrogen atom, then the required energy to remove an electron from n=2 is:
Question # 17
In according with Bohr's theory the K.E of the electron is equal to:
FSC 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 | The series in infrared region is: |
A. Paschen series
B. Bracket series
C. Pfund series
D. All of above
|
| 2 | 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
|
| 3 | The following gas was identified in the sun using spectroscopy |
A. Hydrogen
B. Helium
C. Carbon
D. Nitrogen
|
| 4 | 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
|
| 5 | Reflecting mirrors in laser is used to |
A. Further stimulation
B. For producing more energetic lasers
C. Both (a) and (b)
D. None of these
|
| 6 | The first spectral lines were discovered in 1885, were |
A. Paschen series
B. Balmer series
C. Pfund series
D. Bracket series
|
| 7 | Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be. |
A. 0.106 nm
B. 0.212 nm
C. 0.053 nm
D. 0.53 x 10-10 nm
|
| 8 | Which is not characteristic of Laser. |
A. Monochromatic
B. Coherent
C. Intense
D. Multi direction
|
| 9 | The idea of laser device was first introduced by C.H. Towners and Authers Schowlan is |
A. 1972
B. 1965
C. 1958
D. 1913
|
| 10 | For an atom of hydrogen atom the radius of the first orbit is given by: |
A. H/me2
B. me/4h2
C. h2/4π2 kme2
D. h2 me2
|
Test Questions