| 1 |
<p class="MsoNormal">The line which passes through pole of the mirror and center
of curvature is called principal:<o:p></o:p></p> |
- A. <p class="MsoNormal">Axis<o:p></o:p></p>
- B. <p class="MsoNormal">Focus<o:p></o:p></p>
- C. <p class="MsoNormal">Line<o:p></o:p></p>
- D. <p class="MsoNormal">None of these<o:p></o:p></p>
|
| 2 |
<p class="MsoNormal">Optical fibres works on the principle of:<o:p></o:p></p> |
- A. <p class="MsoNormal">Reflection<o:p></o:p></p>
- B. <p class="MsoNormal">Refraction<o:p></o:p></p>
- C. <p class="MsoNormal">Total internal reflection<o:p></o:p></p>
- D. <p class="MsoNormal">Diffraction<o:p></o:p></p>
|
| 3 |
<p class="MsoNormal">In C.R.O grid is always connected with potential:<o:p></o:p></p> |
- A. <p class="MsoNormal">Negative<o:p></o:p></p>
- B. <p class="MsoNormal">Positive<o:p></o:p></p>
- C. <p class="MsoNormal">High positive<o:p></o:p></p>
- D. <p class="MsoNormal">Zero positive<o:p></o:p></p>
|
| 4 |
In D.C.motor split rings are made of: |
- A. Steel
- B. Carbon
- C. Copper
- D. Iron
|
| 5 |
<p class="MsoNormal">Eight bits combine to form:<o:p></o:p></p> |
- A. <p class="MsoNormal">A byte<o:p></o:p></p>
- B. <p class="MsoNormal">Megabyte<o:p></o:p></p>
- C. <p class="MsoNormal">Kilobyte<o:p></o:p></p>
- D. <p class="MsoNormal">Gigabyte<o:p></o:p></p>
|
| 6 |
<p class="MsoNormal">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:<o:p></o:p></p> |
- A. <p class="MsoNormal">The rod and the paper are oppositely charged<o:p></o:p></p>
- B. <p class="MsoNormal">The rod acquires a positive charge<o:p></o:p></p>
- C. <p class="MsoNormal">The rod and the paper have the same charges<o:p></o:p></p>
- D. <p class="MsoNormal">The rod acquires a negative charge<o:p></o:p></p>
|
| 7 |
The number of lines of force in a magnetic field depends upon. |
- A. Shape of coil
- B. Sixe of coil
- C. Magnet
- D. Strength of field
|
| 8 |
<p class="MsoNormal">Bouncing back of light after striking the surface is called:<o:p></o:p></p> |
- A. <span style="font-size:11.0pt;line-height:107%;
font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:
Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:Arial;mso-bidi-theme-font:minor-bidi;mso-ansi-language:
EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Refraction</span>
- B. <p class="MsoNormal">Reflection<o:p></o:p></p>
- C. <p class="MsoNormal">Diffraction<o:p></o:p></p>
- D. <p class="MsoNormal">Interference<o:p></o:p></p>
|
| 9 |
Transformer which increase voltage is called. |
- A. Step-up transformer
- B. Step down transformer
- C. D.C.Moter
- D. A.C.genrator
|
| 10 |
<p class="MsoNormal">The value of refractive index of water is:<o:p></o:p></p> |
- A. <p class="MsoNormal">2.33<o:p></o:p></p>
- B. <p class="MsoNormal">1.36<o:p></o:p></p>
- C. <p class="MsoNormal">1.33<o:p></o:p></p>
- D. <p class="MsoNormal">1.39<o:p></o:p></p>
|
