| 1 |
The distance between principal focus and pole of mirror is called: |
- A. Princpal focus
- B. Focal length
- C. P
- D. Image
|
| 2 |
The centre of spherical mirror is called: |
- A. Focus
- B. Axis
- C. Centre
- D. Pole
|
| 3 |
The refractive index of air is: |
|
| 4 |
In totally reflecting prism one angle is of 90<sup>o</sup>, and other two angles are of: |
- A. 30<sup>o</sup>,30<sup>o</sup>
- B. 45<sup>o</sup>,90<sup>o</sup>
- C. 45<sup>o</sup>,45<sup>o</sup>
- D. 40<sup>o</sup>,40<sup>o</sup>
|
| 5 |
<p class="MsoNormal">The data stored in C.D is:<o:p></o:p></p> |
- A. <p class="MsoNormal">680 MB<o:p></o:p></p>
- B. <p class="MsoNormal">650 MB<o:p></o:p></p>
- C. <p class="MsoNormal">700 MB<o:p></o:p></p>
- D. <p class="MsoNormal">750 MB<o:p></o:p></p>
|
| 6 |
<p class="MsoNormal">Which of the following is not processing:<o:p></o:p></p> |
- A. <p class="MsoNormal">Arranging<o:p></o:p></p>
- B. <p class="MsoNormal">Manipulating<o:p></o:p></p>
- C. <p class="MsoNormal">Calculating<o:p></o:p></p>
- D. <p class="MsoNormal">Gathering<o:p></o:p></p>
|
| 7 |
<p class="MsoNormal">Astronauts in space need to communicate with each other by
radio links because:<o:p></o:p></p> |
- A. <p class="MsoNormal">Sound waves travel very slowly in space<o:p></o:p></p>
- B. <p class="MsoNormal">Sound waves travel very fast in space<o:p></o:p></p>
- C. <p class="MsoNormal">Sound waves cannot travel in space<o:p></o:p></p>
- D. <p class="MsoNormal">Sound waves have low frequency in space<o:p></o:p></p>
|
| 8 |
An object of placed at he centre of curvature of a concave mirror. The image produced by the mirror is located: |
- A. out beyond the centre of curvature.
- B. at the centre of curvature
- C. between the centre of curvature and the focal point
- D. at the focal point
|
| 9 |
Focal length for concave mirror is : |
- A. -ve
- B. +ve
- C. same
- D. none of these
|
| 10 |
Which types of image is produced by the converging lens of human eye if it view a distant object? |
- A. Real , erect, same size
- B. Real, inverted, diminshed
- C. Virtual, erect,diminshed
- D. Virtual, inverted, magnified
|
