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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
The first orbit in the hydrogen atom has a radius.
Question # 2
The value of Rydberg constant is:
Question # 3
The rest mass x ray photon is
Question # 4
X- ray diffraction reveals that these are
Question # 5
In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to:
Question # 6
When an electron in an atom goes from a lower to higher orbit its:
Question # 7
The 1st Bohr atom in the hydrogen atom has radius
Question # 8
Which series lies in the ultraviolet region.
Question # 9
Black Body radiation spectrum is an example of:
Question # 10
Charge on positron is:
Question # 11
The Balmer series is obtained when all the transition of electrons terminate on
Question # 12
In an electronic transition atom cannot emit.
Question # 13
Charge on an atom is:
Question # 14
A° is the unit of:
Question # 15
Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be.
Question # 16
Electron volt is unit of:
Question # 17
The longest wavelength of Paschen series is.
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 | The shortest wave length is Bracket series has wave length. |
A. 16/Rn
B. Rn/16
C. 16 Rn
D. 4 Rn
|
| 2 | The following gas was identified in the sun using spectroscopy |
A. Hydrogen
B. Helium
C. Carbon
D. Nitrogen
|
| 3 | In Helium Neon laser, discharge tube is filled with Neon gas. |
A. 10%
B. 15%
C. 85%
D. 90%
|
| 4 | The first theory about the structure of an atom was introduced by |
A. Neil Bohr
B. Einstein
C. Compton
D. Rutherford
|
| 5 | 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
|
| 6 | 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
|
| 7 | If electron jumps from second orbit to first orbit in hydrogen atom it emits photon of. |
A. 3.40 eV
B. 10.20 eV
C. 13.6 eV
D. 3.8 eV
|
| 8 | We can find from de Broglie formula |
A. Wavelength
B. Amplitude
C. Speed of wave
D. Frequency of wave
|
| 9 | Production of x rays is reverse process of |
A. Photo electric effect
B. Compton effect
C. An nihilation
D. Pair production
|
| 10 | 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
|
Test Questions
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