Question

question 15
1 point
which objective would you use if the distance between it and the slide being observed is the least?
○ high power
○ low power
○ oil immersion
○ scanning selected
clear selection
question 16
1 point
which of the following procedures should you perform before using the microscope?
○ clean all lenses with lens paper.
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Explanation:

For Question 15: Microscope objectives with higher magnification have shorter working distance (distance to the slide). Oil immersion objectives have the highest magnification among the options, so they have the least distance to the slide.
For Question 16: Proper pre-use microscope care includes cleaning all lenses with lens paper to remove dust or residue that could interfere with viewing.

Answer:

Question 15: C. Oil immersion
Question 16: A. Clean all lenses with lens paper.