| 1 |
X- ray diffraction reveals that these are |
- A. Particle type
- B. Wave type
- C. Both wave and particle
- D. None of above
|
| 2 |
1 rem = |
- A. 0.001 SV
- B. 0.01 SV
- C. 0.1 SV
- D. 1.01 SV
|
| 3 |
In Helium Neon laser, discharge tube is filled with Neon gas. |
- A. 10%
- B. 15%
- C. 85%
- D. 90%
|
| 4 |
For Paschen series, the value of 'n' starts from |
|
| 5 |
Energy produced due to fission of uranium atom is: |
- A. 500MeV
- B. 200MeV
- C. 700MeV
- D. 750MEV
|
| 6 |
Balmer series lies in |
- A. Visible region
- B. Invisible region
- C. Ultraviolet region
- D. Infrared region
|
| 7 |
A° is the unit of: |
- A. Energy
- B. Length
- C. Nuclear energy
- D. Work
|
| 8 |
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>
|
| 9 |
X-rays were discovered by |
- A. Curie
- B. Henry Becquerel
- C. Rontgen
- D. None of these
|
| 10 |
Helium Neon Laser Beam emitted from discharge tube has a colour. |
- A. Blue
- B. Green
- C. Red
- D. Black
|
