| 21. | Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? |
| a. | Eyepiece lens |
| b. | Objective lens |
| c. | Condenser lens |
| d. | Magnifying lens |
| View Answer Report Discuss 50-50! |
|
Answer: (c).Condenser lens
|
| 22. | What is the minimum distance for the eye to focus any object? |
| a. | 11 cm |
| b. | 25 cm |
| c. | 32 cm |
| d. | 4 2 cm |
| View Answer Report Discuss 50-50! |
|
Answer: (b).25 cm
|
| 23. | Resolving power of a microscope is a function of____________ |
| a. | Wavelength of light used |
| b. | Numerical aperture of lens system |
| c. | Refractive index |
| d. | Wavelength of light used and numerical aperture of lens system |
| View Answer Report Discuss 50-50! |
|
Answer: (d).Wavelength of light used and numerical aperture of lens system
|
| 24. | The greatest resolution in light microscopy can be obtained with ___________ |
| a. | Longest wavelength of visible light used |
| b. | An objective with minimum numerical aperture |
| c. | Shortest wavelength of visible light used |
| d. | Shortest wavelength of visible light used and an objective with the maximum numerical aperture |
| View Answer Report Discuss 50-50! |
|
Answer: (d).Shortest wavelength of visible light used and an objective with the maximum numerical aperture
|
| 25. | Oil immersion objective lens has an NA value of____________ |
| a. | 0.65 |
| b. | 0.85 |
| c. | 1.33 |
| d. | 1.00 |
| View Answer Report Discuss 50-50! |
|
Answer: (c).1.33
|