| 1 |
A normal eye can see near objects clearly at a distance of: |
- A. 20 cm
- B. 25 cm
- C. 30 cm
- D. 35 cm
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| 2 |
The focal length is related to radius of curvature by the formula: |
- A. f = 2R
- B. f = 4R
- C. f = R/2
- D. R = f/2
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| 3 |
<p class="MsoNormal">An example of input device computer is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Keyboard<o:p></o:p></p>
- B. <p class="MsoNormal">printer<o:p></o:p></p>
- C. <p class="MsoNormal">monitor<o:p></o:p></p>
- D. <p class="MsoNormal">RAM<o:p></o:p></p>
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| 4 |
The distance of image from mirror is represented by: |
|
| 5 |
The index of refraction depends on: |
- A. The focal length
- B. The speed of light
- C. the image distance
- D. The object distance
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| 6 |
<p class="MsoNormal">The distance between two consecutive waves compressions or
rarefactions is called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Focal length<o:p></o:p></p>
- B. <p class="MsoNormal">Wave length<o:p></o:p></p>
- C. <p class="MsoNormal">Frequency<o:p></o:p></p>
- D. <p class="MsoNormal">Time period<o:p></o:p></p>
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| 7 |
The ratio of image height to object height is called: |
- A. Linear magnification
- B. Power
- C. Refraction
- D. Radius of curative
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| 8 |
<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>
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| 9 |
The mirror whose inner surface is reflecting is called: |
- A. Concave mirror
- B. Convex mirror
- C. Miroor
- D. Lens
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| 10 |
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
|