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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 energy of 4th Orbit in hydrogen atom is.
Question # 2
Reflecting mirrors in laser is used to
Question # 3
The first spectral lines were discovered in 1885, were
Question # 4
Helium Neon Laser Beam emitted from discharge tube has a colour.
Question # 5
X- ray diffraction reveals that these are
Question # 6
Laser is a beam of light which is
Question # 7
The series in infrared region is:
Question # 8
Kx -Xrays are produced due to transition of electron from.
Question # 9
A° is the unit of:
Question # 10
1 rem =
Question # 11
_____ has the largest de Broglie wavelength at same speed.
Question # 12
If electron jumps from second orbit to first orbit in hydrogen atom it emits photon of.
Question # 13
Life time of metastable states is
Question # 14
The Balmer series is obtained when all the transition of electrons terminate on
Question # 15
Balmer series lies in region of electromagnetic spectrum.
Question # 16
Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be.
Question # 17
The longest wavelength of Paschen series is.
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 | 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
|
| 3 | Radius of first Bohr's orbit is. |
A. 0.053 nm
B. 0.053 mm
C. 0.053 micro meter
D. 0.053 m
|
| 4 | 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
|
| 5 | 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
|
| 6 | The value of Rydberg constant is |
A. 1.0974 x 107 m-1
B. 1.0974 x 10-7 m-1
C. 1.0974 x 106 m-1
D. 1.0974 x 10-6 m-1
|
| 7 | The rest mass x ray photon is |
A. Infinite
B. Zero
C. 1.67 X-17 kg
D. All of the above
|
| 8 | Paschen series lies in the |
A. Far ultraviolet region
B. Visible region
C. Ultraviolet region
D. Inferred region
|
| 9 | 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
|
| 10 | 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
|
Test Questions
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