| 1 |
The early Greeks believed that matter waves was |
- A. Discrete
- B. Continuous
- C. Both continuous and discrete
- D. All of above
|
| 2 |
One joule of energy absorbed per kilogram of a body is |
- A. Roentgen
- B. Grey
- C. Rem
- D. Curie
|
| 3 |
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
|
| 4 |
A particles equal or greater in mass than of protons are called. |
- A. Baryons
- B. Leptons
- C. Mesons
- D. Quarks
|
| 5 |
Mass equivalent of 931 MeV energy is: |
- A. 6.02 x 10<sup>-23</sup> kg
- B. 1.766 x 10<sup>-27</sup>kg
- C. 2.67 x 10<sup>-29</sup>kg
- D. 6.02 x 10<sup>-87</sup>kg
|
| 6 |
Two up quarks and one down quarks makes a |
- A. Proton
- B. Newton
- C. Photon
- D. Meson
|
| 7 |
The charge of an alpha particle is equal to |
|
| 8 |
The mass of beta particle is equal to the mass |
- A. Proton
- B. Neutron
- C. Electron
- D. Photon
|
| 9 |
The radio active nuclide <sub>86</sub>Ra<sup>228</sup> decays by a series of emissions of three alpha particles and one beta particle. The nuclide X finally formed is: |
- A. <sub>64</sub>X<sup>220</sup>
- B. <sub>86</sub>X<sup>222</sup>
- C. <sub>84</sub>X<sup>216</sup>
- D. <sub>88</sub>X<sup>215</sup>
|
| 10 |
Marie Curie and Pierre Curie discovered. |
- A. Uranium
- B. Uranium and Radium
- C. Polonium and radium
- D. Radium
|
