| 1 |
In Helium Neon laser, discharge tube is filled with Neon gas. |
- A. 10%
- B. 15%
- C. 85%
- D. 90%
|
| 2 |
The unit of Rh is. |
- A. ms-1
- B. m
- C. m<sup>2</sup>
- D. m<sup>-1</sup>
|
| 3 |
The process by which lesser beam can be used to generate 3-dimensional images of objects is called |
- A. Holography
- B. Geo graphy
- C. Tomography
- D. Radio graphy
|
| 4 |
For an atom of hydrogen atom the radius of the first orbit is given by: |
- A. H/me<sup>2</sup>
- B. me/4h<sup>2</sup>
- C. h2/4<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π<sup>2</sup> kme<sup style="">2</sup></span>
- D. h<sup>2</sup> me<sup>2</sup>
|
| 5 |
First spectral series of hydrogen atom was discovered by |
- A. Lyman
- B. Rydberg
- C. Balmer
- D. Paschen
|
| 6 |
The series in infrared region is: |
- A. Paschen series
- B. Bracket series
- C. Pfund series
- D. All of above
|
| 7 |
If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be |
- A. 136.0 volt
- B. 3.0 volt
- C. 13.6 volt
- D. None of these
|
| 8 |
Boher proposed his atomic model in: |
- A. 1910
- B. 1911
- C. 1912
- D. 1913
|
| 9 |
X- ray diffraction reveals that these are |
- A. Particle type
- B. Wave type
- C. Both wave and particle
- D. None of above
|
| 10 |
Electron volt is unit of: |
- A. Chemical energy
- B. Potential energy
- C. Nuclear energy
- D. heat energy
|
