| 1 |
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
|
| 2 |
The number of Isotopes of cesium are. |
|
| 3 |
The moderator used in a nuclear reactor |
- A. Sodium
- B. Uranium
- C. Graphite
- D. Cadmium
|
| 4 |
Charge on an electron was determined by |
- A. Ampere
- B. Millikan
- C. Maxwell
- D. Bohr
|
| 5 |
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
|
| 6 |
Gamma radiations are emitted due to: |
- A. De-excitation of atom
- B. De-excitation of nucleus
- C. Excitation of atom
- D. Excitation of nucleus
|
| 7 |
Binding energy for deuteron nucleus is given by |
- A. 2.8 MeV
- B. 2.23 MeV
- C. 2.28 MeV
- D. 2.25 MeV
|
| 8 |
Unit of decay constant<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">λ is:</span> |
- A. ms
- B. m<sup>-1</sup>
- C. m
- D. S<sup>-1</sup>
|
| 9 |
The unit of radioactivity is: |
- A. Bequerel
- B. Henry
- C. Pascal
- D. Joule
|
| 10 |
The most abundant isotope of neon is: |
- A. Neon 21
- B. Neon 20
- C. Neon 22
- D. None of above
|