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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 typical nuclei are less than:
Question # 2
The idea of laser device was first introduced by C.H. Towners and Authers Schowlan is
Question # 3
X-rays were discovered by
Question # 4
Which is not true for X rays
Question # 5
First spectral series of hydrogen atom was discovered by
Question # 6
The value of Rydberg constant is:
Question # 7
Kx -Xrays are produced due to transition of electron from.
Question # 8
X- ray diffraction reveals that these are
Question # 9
The radius of 10th orbit in hydrogen atom is.
Question # 10
The 1st Bohr atom in the hydrogen atom has radius
Question # 11
Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be.
Question # 12
When meta I is heated sufficiently electrons are given off by the metal. This phenomenon is known as.
Question # 13
In Helium Neon laser, discharge tube is filled with Neon gas.
Question # 14
Balmer series lies in
Question # 15
The series in infrared region is:
Question # 16
Black Body radiation spectrum is an example of:
Question # 17
1 rad =
FSC Part 2 Physics Chapter 20 Online Test MCQ's
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| Sr.# | Question | Answer |
|---|---|---|
| 1 | For Holography we use |
A. X ray
B. Laser
C. gama rays
D. Beta rays
|
| 2 | Charge on an atom is: |
A. Positive
B. Negative
C. Neutral
D. None of these
|
| 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 | In an electronic transition atom cannot emit. |
A. Infrared radiations
B. Visible radiations
C. Ultraviolet radiations
D. Gama radiations
|
| 5 | 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
|
| 6 | 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
|
| 7 | In according with Bohr's theory the K.E of the electron is equal to: |
A. ke2/2r
B. Ze2/r
C. Ze2/r2
D. Ze2/2r2
|
| 8 | Life time of metastable states is |
A. 10-6 sec or more
B. 10-3 sec or more
C. 10-5 sec or more
D. None of these
|
| 9 | Electron volt is unit of: |
A. Chemical energy
B. Potential energy
C. Nuclear energy
D. heat energy
|
| 10 | The typical nuclei are less than: |
A. 10-16m
B. 10-14m
C. 10-12m
D. 10-10m
|
| 11 | Which is not true for X rays |
A. X rays are not defected by electric field
B. X rays are polarized
C. X rays consist of electromagnetic waves
D. X rays can be diffracted by grating
|
| 12 | Charge on positron is: |
A. Negative
B. Positive
C. Netural
D. None of these
|
| 13 | Photons emitted in inner shell transition are. |
A. Continuous X -rays
B. Discontinuous X rays
C. Characteristic X rays
D. Energetic X rays
|
| 14 | The first theory about the structure of an atom was introduced by |
A. Neil Bohr
B. Einstein
C. Compton
D. Rutherford
|
| 15 | In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to: |
A. Infinite energy
B. Maximum energy
C. Minimum energy
D. Zero energy
|
| 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: |
A. 10.2 eV
B. 0 eV
C. 3.4 eV
D. 6.8 eV
|
| 17 | The radius of hydrogen atom is: |
A. 0.53A°
B. 0.053A°
C. 0.53 x 10-9
D. 0.053 x10-9
|
Test Questions
