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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
Which is not true for X rays
Question # 2
In an electronic transition atom cannot emit.
Question # 3
The longest wavelength of Paschen series is.
Question # 4
The first theory about the structure of an atom was introduced by
Question # 5
For Paschen series, the value of 'n' starts from
Question # 6
The rest mass x ray photon is
Question # 7
A° is the unit of:
Question # 8
Laser is a beam of light which is
Question # 9
When meta I is heated sufficiently electrons are given off by the metal. This phenomenon is known as.
Question # 10
In Helium Neon laser, the discharge tube is filled with
Question # 11
Balmer Empirical formula explains the electromagnetic radiation of any excited atom in terms of their.
Question # 12
The first spectral lines were discovered in 1885, were
Question # 13
The first orbit in the hydrogen atom has a radius.
Question # 14
Helium-Neon laser discharge tube contains neon
Question # 15
Reflecting mirrors in laser is used to
Question # 16
Life time of metastable states is
Question # 17
For Holography we use
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 | In Helium Neon laser, discharge tube is filled with Neon gas. |
A. 10%
B. 15%
C. 85%
D. 90%
|
| 2 | 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
|
| 3 | Laser is a device which can produce: |
A. Intense beam of light
B. Coherant beam of light
C. Monochromatic beam of light
D. All of the above
|
| 4 | The Balmer series is obtained when all the transition of electrons terminate on |
A. 1st orbit
B. 2nd orbit
C. 3rd orbit
D. 4th orbit
|
| 5 | The rest mass x ray photon is |
A. Infinite
B. Zero
C. 1.67 X-17 kg
D. All of the above
|
| 6 | Production of x rays is reverse process of |
A. Photo electric effect
B. Compton effect
C. An nihilation
D. Pair production
|
| 7 | Radius of first Bohr's orbit is. |
A. 0.053 nm
B. 0.053 mm
C. 0.053 micro meter
D. 0.053 m
|
| 8 | 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
|
| 9 | The following gas was identified in the sun using spectroscopy |
A. Hydrogen
B. Helium
C. Carbon
D. Nitrogen
|
| 10 | The typical nuclei are less than: |
A. 10-16m
B. 10-14m
C. 10-12m
D. 10-10m
|
Test Questions