| 1 |
Which is not the essential component of a spectrometer. |
- A. Collimator
- B. Telescope
- C. Turntable
- D. Microscope
|
| 2 |
The magnifying power of a convex lens of focal lendth 10 cm is |
|
| 3 |
If an object is placed with in the focal length of a convex lens, its image is formed. |
- A. Real
- B. Inverted
- C. Virtual
- D. Smaller than object
|
| 4 |
The diameter of a lens is called |
- A. Focal length
- B. Aperture
- C. Principle axis
- D. Centre
|
| 5 |
Information carrying capacity of optical fibre called. |
- A. Capacity
- B. Band width
- C. Immunity
- D. Ability
|
| 6 |
A convex lens acts as diverging lens if the object is placed at |
- A. F
- B. 2F
- C. Between F and 2 F
- D. Within the F
|
| 7 |
The light signal in Opticla fiber must be regenerated by advice called. |
- A. Regenerator
- B. Generator
- C. Repeater
- D. Diode
|
| 8 |
The ratio of size of image and size of object is |
- A. Focal length
- B. Magnification
- C. Resolving power
- D. Principle focus
|
| 9 |
If focal length of objective and eye piece is 0.5 m and 10 cm respectively then magnifying power of telescope will be. |
|
| 10 |
The device used to study the spectra from different sources of light is |
- A. Telescope
- B. Optical fibre
- C. Spectrometer
- D. Microscope
|
