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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
If electron jumps from second orbit to first orbit in hydrogen atom it emits photon of.
Question # 2
The rest mass x ray photon is
Question # 3
Which is not characteristic of Laser.
Question # 4
Electron volt is unit of:
Question # 5
The following gas was identified in the sun using spectroscopy
Question # 6
In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to:
Question # 7
Study of hydrogen visible spectrum in
Question # 8
In according with Bohr's theory the K.E of the electron is equal to:
Question # 9
Bremsstrahlung radiation are examples of
Question # 10
The first laser was built by
Question # 11
For an atom of hydrogen atom the radius of the first orbit is given by:
Question # 12
If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be
Question # 13
Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be.
Question # 14
An atom can reside in excited state for
Question # 15
First spectral series of hydrogen atom was discovered by
Question # 16
Target material used in x-rays tube have following properties.
Question # 17
Laser is a device which can produce:
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 | X-rays were discovered by |
A. Curie
B. Henry Becquerel
C. Rontgen
D. None of these
|
| 2 | The X-rays diffraction with crystal was first studied by |
A. W.H Bragg
B. W.L. Bragg
C. Michelson
D. None of these
|
| 3 | Photons emitted in inner shell transition are. |
A. Continuous X -rays
B. Discontinuous X rays
C. Characteristic X rays
D. Energetic X rays
|
| 4 | The unit of Rh is. |
A. ms-1
B. m
C. m2
D. m-1
|
| 5 | Frequency of x-rays depends upon. |
A. Number of electrons striking target
B. Accelerating potencial
C. Nature of the target
D. Both B and C
|
| 6 | The typical nuclei are less than: |
A. 10-16m
B. 10-14m
C. 10-12m
D. 10-10m
|
| 7 | In Helium Neon laser, discharge tube is filled with Neon gas. |
A. 10%
B. 15%
C. 85%
D. 90%
|
| 8 | Balmer series lies in region of electromagnetic spectrum. |
A. Infrared
B. Visible
C. Ultraviolet
D. Fra infrared
|
| 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 | 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
|
Test Questions
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