| 1 |
<p class="MsoNormal">As the temperature of a conductor rises, its resistance:<o:p></o:p></p> |
- A. <p class="MsoNormal">Increases<o:p></o:p></p>
- B. <p class="MsoNormal">Increases<o:p></o:p></p>
- C. <p class="MsoNormal">Decreases<o:p></o:p></p>
- D. <p class="MsoNormal">Does not change<o:p></o:p></p>
- E. <p class="MsoNormal">None of these<o:p></o:p></p>
|
| 2 |
Radiations present in atmosphere due to the presence of different radioactive elements are: |
- A. Cosmic radiations
- B. Background radiations
- C. secondary radiations
- D. Electromagnetic radiations
|
| 3 |
<p class="MsoNormal">The current which does not change its direction is called:<o:p></o:p></p> |
- A. <p class="MsoNormal">A.C<o:p></o:p></p>
- B. <p class="MsoNormal">D.C<o:p></o:p></p>
- C. <p class="MsoNormal">Conventional<o:p></o:p></p>
- D. <p class="MsoNormal">Transient current<o:p></o:p></p>
|
| 4 |
<p class="MsoNormal">The unit of electric power is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Volt<o:p></o:p></p>
- B. <p class="MsoNormal">Watt<o:p></o:p></p>
- C. <p class="MsoNormal">Joule<o:p></o:p></p>
- D. <p class="MsoNormal">Coulomb<o:p></o:p></p>
|
| 5 |
<p class="MsoNormal">A thermistor is a dependent resistors:<o:p></o:p></p> |
- A. <p class="MsoNormal">Heat<o:p></o:p></p>
- B. <p class="MsoNormal">temperature<o:p></o:p></p>
- C. <p class="MsoNormal">energy<o:p></o:p></p>
- D. <p class="MsoNormal">mass<o:p></o:p></p>
|
| 6 |
The half life of plutonium<sup> 236</sup>Pu<sub>94 </sub>is: |
- A. 2.00 years
- B. 2.35 years
- C. 2.79 years
- D. 2.85 years
|
| 7 |
The half life of argon nuclide Ar-40 is: |
- A. 2 x 10<sup>8 </sup>years
- B. 2 .2x 10<sup>8</sup>years
- C. 2.4x 10<sup>8</sup>years
- D. 2.8x 10<sup>8</sup>years
|
| 8 |
Radioactive isotopes present in atmosphere is |
- A. Cobalt -60
- B. Ph-32
- C. Carbon -14
- D. Carbon -20
|
| 9 |
The half life of carbon -14 is: |
- A. 5730 years
- B. 5740 years
- C. 5750 years
- D. 5760 years
|
| 10 |
The half of carbon 14 is |
- A. 5720 years
- B. 5730 years
- C. 5740 years
- D. 5750 years
|
