| 1 |
If the object is at 5 cm from the lens of simple microscope than its magnifying power will be. |
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| 2 |
The Detector in Photo phone is made up of. |
- A. Cadmium
- B. Germanium
- C. Selenium
- D. Silicon
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| 3 |
The magnifying power is also called |
- A. Resolving power
- B. Angular magnification
- C. Strength of eye
- D. None of these
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| 4 |
The focal length of convex lens |
- A. Negative
- B. Positive
- C. small
- D. Large
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| 5 |
The diameter of a lens is called |
- A. Focal length
- B. Aperture
- C. Principle axis
- D. Centre
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| 6 |
The final image formed by a simple microscope. |
- A. Virtual and inverted
- B. Real and erected
- C. Virtual and erected
- D. Real and inverted
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| 7 |
Which is not the essential component of a spectrometer. |
- A. Collimator
- B. Telescope
- C. Turntable
- D. Microscope
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| 8 |
Multimode graded index fibre has a core whose diameter range lie from. |
- A. 5 to 50 micro meter
- B. 50 to 100 micro meter
- C. 40 to 1000 micro meter
- D. 50 to 10,000 micrometer
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| 9 |
If an object lies at focus point F in front of a converd lens, its image is formed at. |
- A. 2F
- B. F
- C. 3F
- D. Infinity
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| 10 |
The optical fibre is covered for protection by |
- A. Glass jacket
- B. Plastic jacket
- C. Steel jacket
- D. Diamond jacket
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