| 1 |
The final image seen through ey piece in telescope is. |
- A. Real, enlarge and inverted
- B. Vertual, enlarge and erect
- C. Virtual, enlarge and inverted
- D. In Real, enlarge and erect
|
| 2 |
The optical fiber is covered for protection by a |
- A. Glass Jacket
- B. Plastic Jacket
- C. Copper Jacket
- D. Aluminum Jacket
|
| 3 |
The Detector in Photo phone is made up of. |
- A. Cadmium
- B. Germanium
- C. Selenium
- D. Silicon
|
| 4 |
The device used to study the spectra from different sources of light is |
- A. Telescope
- B. Optical fibre
- C. Spectrometer
- D. Microscope
|
| 5 |
The light signal in Opticla fiber must be regenerated by advice called. |
- A. Regenerator
- B. Generator
- C. Repeater
- D. Diode
|
| 6 |
Critical angle is that angle of incident ofr which angle of refraction is. |
- A. 90 <sup>o</sup>
- B. 45 <sup>o</sup>
- C. 42 <sup>o</sup>
- D. 24 <sup>o</sup>
|
| 7 |
A convex lens can be used as |
- A. Simple microscope
- B. Compound microscope
- C. Telescope
- D. Spectrometer
|
| 8 |
For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively. |
- A. 10 cm
- B. 20 cm
- C. 5 cm
- D. 120 cm
|
| 9 |
More details of an object can be seen with a microscope by using |
- A. Green light
- B. Red light
- C. Yellow light
- D. Blue light
|
| 10 |
The ratio of size of image and size of object is |
- A. Focal length
- B. Magnification
- C. Resolving power
- D. Principle focus
|
