| 1 |
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
|
| 2 |
Totally reflecting prism turns the incident ray at an angle of: |
- A. 90<sup>o</sup>
- B. 60<sup>o</sup>
- C. 75<sup>o</sup>
- D. 45<sup>o</sup>
|
| 3 |
In a convex mirror the size of the image: |
- A. Is smaller than the size of the object
- B. Is greater than the size of the object
- C. Depends upon the position of the object
- D. Is equal to the size of the object
|
| 4 |
The index of refraction depends on: |
- A. The focal length
- B. The speed of light
- C. the image distance
- D. The object distance
|
| 5 |
The point through which rays of light pass after reflection from concave mirror is called principal: |
- A. Focus
- B. Circle
- C. Axis
- D. Radius
|
| 6 |
Totally reflecting prism is used in: |
- A. periscope
- B. binoculars
- C. periscope and binocular
- D. telescope
|
| 7 |
<p class="MsoNormal">A data storage device is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Printer<o:p></o:p></p>
- B. <p class="MsoNormal">Hard disk<o:p></o:p></p>
- C. <p class="MsoNormal">Monitor<o:p></o:p></p>
- D. <p class="MsoNormal">CPU<o:p></o:p></p>
|
| 8 |
Which types of image is formed by a concave lens on a screen? |
- A. Inverted and real
- B. Inverted and virtual
- C. upright and real
- D. Upright and virtual
|
| 9 |
A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance? |
- A. 5.0 cm
- B. 7.5 cm
- C. 15 cm
- D. 20 cm
|
| 10 |
If a ray of light is glass is incident on an air surface at an angle greater than the critical angle, the ray will. |
- A. refract only
- B. reflect only
- C. partially refract and partially reflect
- D. Diffract only
|
