| 1 |
Compton shift is maximum for scattering angle of photon |
- A. 0<sup>o</sup>
- B. 90<sup>o</sup>
- C. 180<sup>o</sup>
- D. 45<sup>o</sup>
|
| 2 |
In 1905, the special theory of relativity was proposed by |
- A. Einstein
- B. Bohr
- C. Maxwell
- D. De Broglie
|
| 3 |
A positron is an anti particle of. |
- A. Proton
- B. Electron
- C. Neutron
- D. Photon
|
| 4 |
The photoelectric effect predicts that light is made of |
- A. Photons
- B. Neutrons
- C. Protons
- D. None of these
|
| 5 |
Pair production cannto take place in vacuum because : |
- A. Mass in not conserved
- B. Momentum is not conserved
- C. Energy is not conserved
- D. Charge is not conserved
|
| 6 |
Potassium Cathodes in photocell emit electrons for a light. |
- A. Visible
- B. Infra red
- C. Ultra violet
- D. X rays
|
| 7 |
The physical quantity related to photon, that does not change in Compton scattering is. |
- A. Energy
- B. Speed
- C. Frequency
- D. Wavelength
|
| 8 |
The number of electrons emitted depends upon |
- A. Colour of target surface
- B. Shape of surface
- C. Frequency of incident light
- D. Intensity of incident light
|
| 9 |
The special theory of relativity based on. |
- A. One postulate
- B. Two postulates
- C. Three postulates
- D. Four postulates
|
| 10 |
When platinum is it becomes orange at |
- A. 500<sup>o</sup>C
- B. 900<sup>o</sup>C
- C. 1100<sup>o</sup>C
- D. 1300<sup>o</sup>C
|