| 1 |
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
|
| 2 |
The mirror whose outer surface is reflecting is called: |
- A. Concave mirror
- B. Convex mirror
- C. Lens
- D. Mirror
|
| 3 |
Angle opposite to the base of triangle of prism is called: |
- A. angle of incidence
- B. angle of refraction
- C. angle of prism
- D. emerging angle
|
| 4 |
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
|
| 5 |
The ray of the light after reflection from concave mirror passes through: |
- A. Centre
- B. Principal focus
- C. Pole
- D. None of these
|
| 6 |
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
|
| 7 |
The principal focus of a concave mirror is: |
- A. Virtual
- B. Real
- C. Imaginary
- D. Dual aspect
|
| 8 |
<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>
|
| 9 |
The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be: |
- A. Absorbed
- B. Totallly reflected
- C. Partially reflected and partially transmitted
- D. Totally transmitted
|
| 10 |
An object is placed 6 cm away in front of a concave mirror that has 10 cm focal length. Determine the location of the image: |
- A. -5 cm
- B. -10 cm
- C. -15 cm
- D. -20 cm
|
