All of the Following Are Guidelines for Using the Oil-Immersion

question 10

Multiple Choice

All of the following are guidelines for using the oil-immersion lens EXCEPT which statement?

• A) Once the oil is applied and the oil-immersion objective lens is moved in place, focus the lens with the fine focus knob.
• B) Once the oil-immersion lens is in place, swing the objective away from the slide and add a small drop of oil.
• C) Place the slide on the microscope and focus first on low power, then medium and the high dry magnifications.
• D) Once your slide is in position place a drop of oil on the slide and focus first at low power.

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