| 1 |
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
|
| 2 |
The quantity/factor h/m<sub>o</sub>c has the dimensions of. |
- A. Length
- B. Time
- C. Mass
- D. Energy
|
| 3 |
The concept of direction is purely |
- A. Relative
- B. Absolute
- C. Relative to the motion
- D. None of these
|
| 4 |
Compton's effect is associated with |
- A. gamma rays
- B. Beta rays
- C. X rays
- D. Positive rays
|
| 5 |
The mass of an object will be doubled at speed. |
- A. 2.6 x 10<sup>8</sup> m/s
- B. 1.6 x 10<sup>8 </sup>m/s
- C. 2.6 x 10<sup>7 </sup>m/s
- D. 3.6 x 10<sup>7</sup> m/s
|
| 6 |
Who explained the photo electric effect. |
- A. Max Plank
- B. Einstein
- C. Henry
- D. Rutherford
|
| 7 |
The converses of annihilation of matter is: |
- A. Photoelectric effect
- B. Relativistic effect
- C. Pair production
- D. Compton effect
|
| 8 |
The photoelectric effect predicts that light is made of |
- A. Photons
- B. Neutrons
- C. Protons
- D. None of these
|
| 9 |
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
|
| 10 |
Application of wave like nature of particle is |
- A. Photodiode
- B. Optical microscope
- C. Electron microscope
- D. Compound microscope
|