| 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 |
To see stomach problems we use: |
- A. Gastroscope
- B. Bronchoscope
- C. Cystoscope
- D. All of these
|
| 3 |
The mirror whose outer surface is reflecting is called: |
- A. Concave mirror
- B. Convex mirror
- C. Lens
- D. Mirror
|
| 4 |
Concave mirror formula is given by: |
- A. R = 2r
- B. sin<i/sin<r
- C. 1/f=1/p+1/q
- D. 1/f=1/p-1/q
|
| 5 |
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
|
| 6 |
<p class="MsoNormal">For a normal person audible frequency range for sound wave
lies between:<o:p></o:p></p> |
- A. <p class="MsoNormal">10 Hz and 10kHz<o:p></o:p></p>
- B. <p class="MsoNormal">20Hz and 20 kHz<o:p></o:p></p>
- C. <p class="MsoNormal">25 Hz and 25 kHz<o:p></o:p></p>
- D. <p class="MsoNormal">30Hz and 30 kHz<o:p></o:p></p>
|
| 7 |
The ray of light striking to the side of prism is called: |
- A. refraction ray
- B. incident ray
- C. reflected ray
- D. emergent ray
|
| 8 |
The line which passes through pole of the mirror and center of curvature is called principal: |
- A. axis
- B. Focus
- C. Line
- D. None of these
|
| 9 |
The totally reflectiing prism one angle is of: |
- A. 45<sup>o</sup>
- B. 90<sup>o</sup>
- C. 180<sup>o</sup>
- D. 120<sup>o</sup>
|
| 10 |
When the object is placed beyond 2F of a convex lens, the image formed will be: |
- A. Real, inverted and smaller than the object
- B. Real, inverted and of the same size as the object
- C. Real, inverted and larger in size than the object
- D. Virtual, erect and larger in size than the object
|
