| 1 |
The unit of Plank's constant 'h' is. |
- A. JC
- B. J/C
- C. JS
- D. J/S
|
| 2 |
1 kg mass will be equivalent to energy. |
- A. 9 x 10<sup>8</sup> J
- B. 9 X 10<sup>12</sup> J
- C. 9 X 10<sup>16</sup> J
- D. 9 X 10<sup>19</sup> J
|
| 3 |
The concept of direction is purely |
- A. Relative
- B. Absolute
- C. Relative to the motion
- D. None of these
|
| 4 |
Minimum energy needed to escape an electron ofrm metal surface is called: |
- A. Threshold energy
- B. Threshold frequency
- C. Work function
- D. Work ability
|
| 5 |
The energy of photon is givne by |
- A. mv2/2
- B. hf
- C. Va e
- D. mac<sup>1</sup>
|
| 6 |
The uncertainty principle was given by |
- A. De-Broglie
- B. Heisenberg
- C. Einstein
- D. Max Planck
|
| 7 |
Wave nature of particle was given by: |
- A. Clemensen
- B. Louis de Broglie
- C. Laster H. Germer
- D. Clinton S. Davisson
|
| 8 |
Which one of the following paved the way for modern physics |
- A. Newtonian mechanics
- B. Theory of relativity
- C. Quantum theory
- D. All of above
|
| 9 |
Potassium Cathodes in photocell emit electrons for a light. |
- A. Visible
- B. Infra red
- C. Ultra violet
- D. X rays
|
| 10 |
Internal frame is a frame is which |
- A. 1st law holds
- B. 2nd law holds
- C. 3rd law holds
- D. Kelvin's law holds
|