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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
An electron in H -atom is excited from ground state n=4 , How many spectral lines are possible in this case.
Question # 3
The Balmer series is obtained when all the transition of electrons terminate on
Question # 4
The radius of hydrogen atom is:
Question # 5
The idea of laser device was first introduced by C.H. Towners and Authers Schowlan is
Question # 6
The process by which lesser beam can be used to generate 3-dimensional images of objects is called
Question # 7
The unit of Rh is.
Question # 8
For Paschen series, the value of 'n' starts from
Question # 9
For Holography we use
Question # 10
Balmer series lies in region of electromagnetic spectrum.
Question # 11
Charge on an atom is:
Question # 12
Which is not true for X rays
Question # 13
We can find from de Broglie formula
Question # 14
Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be.
Question # 15
Which is not characteristic of Laser.
Question # 16
Production of x rays is reverse process of
Question # 17
The velocity of electron moving is 1st orbit of hydrogen atom 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 | 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
|
| 2 | 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
|
| 3 | The energy of 4th Orbit in hydrogen atom is. |
A. -2.51 eV
B. -3.50 eV
C. -13.60 eV
D. -0.85 eV
|
| 4 | Charge on positron is: |
A. Negative
B. Positive
C. Netural
D. None of these
|
| 5 | 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
|
| 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 | 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
|
| 8 | Boher proposed his atomic model in: |
A. 1910
B. 1911
C. 1912
D. 1913
|
| 9 | The series in infrared region is: |
A. Paschen series
B. Bracket series
C. Pfund series
D. All of above
|
| 10 | Balmer series lies in |
A. Visible region
B. Invisible region
C. Ultraviolet region
D. Infrared region
|
Test Questions