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FSC Part 2 Physics
Chapter 19 Test
Start Chapter 19 Test
FSC Part 2 Physics Chapter Wise Test
(English Medium)
MCQ's Test For Chapter 0 "Physics FSC Part 2 Chapter 19 Online MCQ's Test"
Try The MCQ's Test For Chapter 0 "Physics FSC Part 2 Chapter 19 Online MCQ's Test"
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Total Questions17
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Time Allowed20
Physics FSC Part 2 Chapter 19 Online MCQ's Test
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Question # 1
Platinum wire becomes yellow at a temperature of.
Question # 2
The maximum kinetic energy of emitted photo electrons depends upon.
Question # 3
In an nihilation emitted photons moves in opposite directions to conserve.
Question # 4
The minimum frequency needed to emit an electron form metal surface is called:
Question # 5
Who explained the photo electric effect.
Question # 6
When the K.E. of photoelectric is zero, the frequency of incident photon is.
Question # 7
When platinum wire is heated, it changes to cherry red at temperature.
Question # 8
In 1905, the special theory of relativity was proposed by
Question # 9
Maximum Compton shift is observed at.
Question # 10
Number of electros emitted in photo electric effect depend upon.
Question # 11
A positron is an anti particle of.
Question # 12
We can never accurately describes all aspects of sbatomic particles simulatanously. It is correct according to:
Question # 13
Compton's effect is associated with
Question # 14
The stopping potential for a certain metal is 10 volts. Thus work function for the cathode is.
Question # 15
Light of 4.5 eV is incident on a Cesium surface and stopping potential is 0.25 eV, maximum K.E. of emitted electron is.
Question # 16
By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about.
Question # 17
The principle regarding the dual nature of light was first discovered by
FSC Part 2 Physics Chapter 19 Online Test MCQ's
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FSc Part II Physics Chapter 0 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Eintein's Photoelectric equation is Ek= hf -∅ in this equation E1, refers to: |
A. K.E of al the emited electrons
B. Mean K.E of emited electrons
C. Maximum K.E of emited electrons
D. Minimum K.E of emited electrons
|
| 2 | Using relativistic effects the location of an air craft after an hour fight can be predicated about |
A. 20 m
B. 50 m
C. 760 m
D. 780 m
|
| 3 | Potassium Cathodes in photocell emit electrons for a light. |
A. Visible
B. Infra red
C. Ultra violet
D. X rays
|
| 4 | The energy of the photon of wavelength 500 nm is. |
A. 3.10 eV
B. 2.49 eV
C. 1.77 eV
D. 1.52 eV
|
| 5 | 1 kg mass will be equivalent to energy. |
A. 9 x 108 J
B. 9 X 1012 J
C. 9 X 1016 J
D. 9 X 1019 J
|
| 6 | Pair production can take place only when energy of radiation is equal and greater than 1.02 MeV, thus correct option is. |
A. X rays
B. Gama rays
C. Heat Radiation
D. Ultraviolet rays
|
| 7 | Disintegration of photon on striking a nucleus into an electron and positron is known as. |
A. Annihilation of matter
B. Compton effect
C. Pair production
D. Photo electric effect
|
| 8 | An electron miroscope emplys which to one of the following particles? |
A. Electron ahve a wave nature
B. Electrons can be focused by an electric field
C. Electrons can be focused by a magnetic field
D. All of the above
|
| 9 | When platinum is it becomes orange at |
A. 500oC
B. 900oC
C. 1100oC
D. 1300oC
|
| 10 | The dimensions of Plank's constant is same as that of. |
A. Energy
B. Power
C. Acceleration
D. Angular momentum
|
Test Questions