| 1 |
If we double the distance between two charges, what will be the change in the force between them? |
- A. Half
- B. Double
- C. One fourth
- D. Four times
|
| 2 |
Unlike charges always: |
- A. Repel each other
- B. Attract each other
- C. Sometimes repel and attract each other
- D. Both A and B
|
| 3 |
A positive and negative charges are initially 4 cm apart. When they are moved closer together so that they are now only 1 cm apart, the force between them is: |
- A. 4 times smaller than before
- B. 4 times larger than before
- C. 8 times larger than before
- D. 16 times larger than before.
|
| 4 |
<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>
|
| 5 |
<p class="MsoNormal">X=A.B. This equation is used for which operation:<o:p></o:p></p> |
- A. <p class="MsoNormal">AND<o:p></o:p></p>
- B. <p class="MsoNormal">OR<o:p></o:p></p>
- C. <p class="MsoNormal">NOT<o:p></o:p></p>
- D. <p class="MsoNormal">NAND<o:p></o:p></p>
|
| 6 |
<p class="MsoNormal">The sound level of rustling of leave is:<o:p></o:p></p> |
- A. <p class="MsoNormal">1 dB<o:p></o:p></p>
- B. <p class="MsoNormal">20 dB<o:p></o:p></p>
- C. <p class="MsoNormal">30 dB<o:p></o:p></p>
- D. <p class="MsoNormal">10 dB<o:p></o:p></p>
|
| 7 |
<p class="MsoNormal">The basic operations performed by a computer are:<o:p></o:p></p> |
- A. <p class="MsoNormal">Arithmetic operations<o:p></o:p></p>
- B. <p class="MsoNormal">Non-arithmetic operations<o:p></o:p></p>
- C. <p class="MsoNormal">Logical operations<o:p></o:p></p>
- D. <p class="MsoNormal">Both a and c<o:p></o:p></p>
|
| 8 |
The S.I unit of electric potential is: |
- A. Watt
- B. Joule
- C. Coulomb
- D. Volt
|
| 9 |
Two uncharged objects A and B are rubbed against each other. When object B is placed near a negatively charged object C, the two objects repel each other. Which of these statements is true about object A. |
- A. Remains uncharged
- B. Becomes positively charged
- C. Becomes negatively charged
- D. Unpredicatable
|
| 10 |
The electrostatic force acting on two charges each of 1 C separated by 1m is about . |
- A. 9 x 10<sup>9</sup> N
- B. 9 x 10<sup>-9</sup>N
- C. 9 x 10<sup>8</sup>N
- D. 9 x 10<sup>-8</sup>N
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