| 1 |
An atom can reside in excited state for |
- A. 10<sup>-8</sup> second
- B. One second
- C. 10<sup>-10</sup> second
- D. More than one second
|
| 2 |
The shortest wave length is Bracket series has wave length. |
- A. 16/Rn
- B. Rn/16
- C. 16 Rn
- D. 4 Rn
|
| 3 |
X- ray diffraction reveals that these are |
- A. Particle type
- B. Wave type
- C. Both wave and particle
- D. None of above
|
| 4 |
_____ has the largest de Broglie wavelength at same speed. |
- A. Proton
- B. Alpha particle
- C. Carbon atom
- D. Electron
|
| 5 |
Balmer Empirical formula explains the electromagnetic radiation of any excited atom in terms of their. |
- A. Energy
- B. Mass
- C. Wave length
- D. Momentum
|
| 6 |
Radius of first Bohr's orbit is. |
- A. 0.053 nm
- B. 0.053 mm
- C. 0.053 micro meter
- D. 0.053 m
|
| 7 |
Energy produced due to fission of uranium atom is: |
- A. 500MeV
- B. 200MeV
- C. 700MeV
- D. 750MEV
|
| 8 |
Laser can be made by creating. |
- A. Meta stable
- B. Population inversion
- C. Excited state
- D. All of these
|
| 9 |
The temperature of core of nuclear reactor is: |
- A. 1100°C
- B. 1200°C
- C. 1300°C
- D. 1400°C
|
| 10 |
Production of x rays is reverse process of |
- A. Photo electric effect
- B. Compton effect
- C. An nihilation
- D. Pair production
|
