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Most oil immersion objective have a maximum 
numerical aperture of
  • a)
    1.4
  • b)
    1.350
  • c)
    200 nm
  • d)
    450 nm
Correct answer is option 'A'. Can you explain this answer?
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Most oil immersion objective have a maximumnumerical aperture ofa)1.4b...
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Most oil immersion objective have a maximumnumerical aperture ofa)1.4b...


Oil Immersion Objective Numerical Aperture

Oil immersion objectives are specifically designed for use with immersion oil to maximize the numerical aperture (NA) and improve resolution in microscopy. The maximum numerical aperture of oil immersion objectives is typically:

Explanation

Maximum Numerical Aperture:
- The maximum numerical aperture of most oil immersion objectives is 1.4.
- This high numerical aperture allows for increased light-gathering ability and improved resolution in microscopy.
- Oil immersion objectives are ideal for high magnification and high-resolution imaging, especially in techniques like fluorescence microscopy.

Comparison with Other Options:
- Option 'B' (1.350) is lower than the typical numerical aperture of oil immersion objectives.
- Option 'C' (200 nm) and option 'D' (450 nm) refer to wavelengths, not numerical aperture values. Numerical aperture is a dimensionless quantity that describes the light-gathering ability of an objective lens.

In conclusion, the correct answer is option 'A' (1.4), as this value represents the typical maximum numerical aperture of oil immersion objectives.
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