| 1 |
The charge of an alpha particle is equal to |
|
| 2 |
In Wilson cloud chamber, ß-particles leave |
- A. Thin and continuous tracks
- B. Thick and continuous tracks
- C. No tracks
- D. Thin and discontinuous tracks
|
| 3 |
By emitting Beta particle and gama particle simultaneously the nucleolus changes in its charges by |
- A. N
- B. N/2
- C. N/4
- D. 3N/4
|
| 4 |
The potential difference between the top and bottom of a cloud chamber is of the order of |
- A. 290 v
- B. 400 v
- C. 1 kv
- D. None of above
|
| 5 |
Nuclear fission was discovered by: |
- A. Otto Hahn
- B. Friz strassmann
- C. Both a and b
- D. Michaelson
|
| 6 |
The energy equivalent of 1 kg of matter is about: |
- A. 10<sup>-15</sup> J
- B. 1 J
- C. 10<sup>-12</sup>J
- D. 10<sup>-17</sup>J
|
| 7 |
The first atomic reactor was introduced by |
- A. Currie
- B. Enrico Fermi
- C. Newton
- D. Bohr
|
| 8 |
The building blocks of protons and neutrons are called. |
- A. Ions
- B. Electrons
- C. Positrons
- D. quarks
|
| 9 |
Energy needed to produce an electron hole in solid state detector is. |
- A. 1 to 2 eV
- B. 3 to 4 eV
- C. 6 to 7 eV
- D. 8 to 9 eV
|
| 10 |
In nuclear radiation , track of alpha particle is. |
- A. Thin
- B. Discontinuous
- C. Erratic
- D. Continuous
|
