| 1 |
If the kinetic energy of a free electron doubles, its de Broglie wavelength changes by the factor. |
- A. <b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">√</b><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">2</span>
- B. 1/<b style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">√</b><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">2</span>
- C. 2
- D. 1/2
|
| 2 |
The materialization of energy take place in the process of. |
- A. Photo electric effect
- B. Compton Effect
- C. Pair production
- D. Annihilationof matter
|
| 3 |
In an nihilation emitted photons moves in opposite directions to conserve. |
- A. Mass
- B. Charge
- C. Energy
- D. Momentum
|
| 4 |
Albert Einstein got noble prize in: |
- A. 1926
- B. 1921
- C. 1918
- D. 1931
|
| 5 |
The emission of electrons from metal surface when exposed to light is called: |
- A. Compton effect
- B. Pair production
- C. Photoelectric effect
- D. None of above
|
| 6 |
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
|
| 7 |
In the equation if f<sub>2</sub> > then |
|
| 8 |
<br> |
- A. Wien's constant
- B. Planck's constant
- C. Davison constant
- D. Lumber's constant
|
| 9 |
The existence of positron was discovered in: |
- A. 1929
- B. 1928
- C. 1931
- D. 1933
|
| 10 |
The principle regarding the dual nature of light was first discovered by |
- A. Compton
- B. J.J.Thomson
- C. De-Broglie
- D. Heisenberg
|