| 1 |
Marie Curie and Pierre Curie discovered. |
- A. Uranium
- B. Uranium and Radium
- C. Polonium and radium
- D. Radium
|
| 2 |
The Unit of decay constant. |
- A. Second
- B. (second)-1
- C. m-1
- D. mk
|
| 3 |
Which pair belongs to hadrons. |
- A. Protons and Neutrons
- B. Neutrons and electrons
- C. Photons and electrons
- D. positrons and electrons
|
| 4 |
Cosmic rays consist of |
- A. Protons
- B. High energy photons
- C. Positron
- D. All of above
|
| 5 |
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>
|
| 6 |
The radioactive decay obeys the law |
|
| 7 |
The amount of energy equivalent to 1 a.m.u is |
- A. 931.5 MeV
- B. 93.15 MeV
- C. 9.315 MeV
- D. 2.224 MeV
|
| 8 |
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
|
| 9 |
Low level radiations effects |
- A. Less of hair
- B. Ulceration
- C. Drop of white blood cells
- D. All
|
| 10 |
The force which is responsible for the breaking up of the radioactive element is. |
- A. Weak nuclear force
- B. Strong nuclear force
- C. Electromagnetic force
- D. Gravitational force
|