| 1 |
Who developed the 1st practical electric battery: |
- A. Alessandro volta
- B. Faraday
- C. Newton
- D. None of these
|
| 2 |
<p class="MsoNormal">Sound waves having frequency higher than 20,000 Hz are
called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Ultrasonic<o:p></o:p></p>
- B. <p class="MsoNormal">Infrasonic<o:p></o:p></p>
- C. <p class="MsoNormal">Audible<o:p></o:p></p>
- D. <p class="MsoNormal">Echo<o:p></o:p></p>
|
| 3 |
Volt is named after the Italian physicist: |
- A. Faraday
- B. Alessandro volta
- C. Newton
- D. Coulomb
|
| 4 |
Electric field lines of force were first introduced by: |
- A. Ampere
- B. Farady
- C. Fleming
- D. Coulomb
|
| 5 |
<p class="MsoNormal">Which is the most suitable means of reliable continuous
communication between an orbiting satellite and earth:<o:p></o:p></p> |
- A. <p class="MsoNormal">Mecrowaves<o:p></o:p></p>
- B. <p class="MsoNormal">Radio waves<o:p></o:p></p>
- C. <p class="MsoNormal">Sound waves<o:p></o:p></p>
- D. <p class="MsoNormal">Any light waves<o:p></o:p></p>
|
| 6 |
<p class="MsoNormal">Old people cannot hear sound above than:<o:p></o:p></p> |
- A. <p class="MsoNormal">1000 Hz<o:p></o:p></p>
- B. <p class="MsoNormal">15000 Hz<o:p></o:p></p>
- C. <p class="MsoNormal">20000 Hz<o:p></o:p></p>
|
| 7 |
One coulomb is equal to charge of ________ electrons. |
- A. 6.25 x 10<sup>-19</sup>
- B. 6.25 x 10<sup>19</sup>
- C. 6.25 x 10<sup>18</sup>
- D. 6.25 x 10<sup>-18</sup>
|
| 8 |
<p class="MsoNormal">The unit of intensity of sound:<o:p></o:p></p> |
- A. <p class="MsoNormal">Wm<sup>-1</sup><o:p></o:p></p>
- B. <p class="MsoNormal">Wm<sup>-2</sup><o:p></o:p></p>
- C. <p class="MsoNormal">Wm<o:p></o:p></p>
- D. <p class="MsoNormal">Wm<sup>2</sup><o:p></o:p></p>
|
| 9 |
When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate? |
- A. the rod and the paper are oppositely charged
- B. the rod acquires a positive charge
- C. the reod and the paper have the same charges
- D. the rod acquires a negative charge
|
| 10 |
Five joules of work is needed to shift 10 C of charge from one place to another. The potential difference between the places is: |
- A. 0.5 V
- B. 2 V
- C. 5 V
- D. 10 V
|