How to Use a Microscope

Which of the following is correct as you move the microscope from one place to another?

• Hold the handle and the base.

• Hold the eyepiece and the body tube.

• Hold the objective lenses and the base.

• Hold the nosepiece and the condenser.

For the proper position of the microscope, the handle must be pointing in what direction?

• away from the user

• towards the user

• pointing to the right

• pointing to the left

What knob must be turned first for the initial focusing of the sample?

• fine adjustment knob

• light intensity knob

• coarse adjustment knob

• base knob

How could you know that the objective lens that you will be using is in the proper position for focusing?

• You must see the lens aligned with the stage.

• You must position the lens 90 degrees away

• You must hear a “click” while turning the lens.

• You must see the lens glowing.

Why do you need to adjust the iris diaphragm and condenser to control light intensity in the microscope?

• Too much light creates too much bright field under the microscope.

• Too much light makes the clearer image of the sample.

• Too much light gives color to the image of the sample.

• Too much light magnifies the image of the sample.

Why is it important to open both eyes in viewing the image under the microscope?

• to give a proper 2-dimensional view of the image

• to avoid eye stress and fatigue

• to avoid eye damage

• to give a more beautiful image of the sample

In viewing the image under the microscope, which of the following must be considered for proper observation of the specimen?

• The microscope creates a mirror image of the sample.

• The microscope provides the same replica of the sample.

• The microscope cannot magnify the sample.

• The microscope can make the sample more colorful.

In focusing samples under the high power objective, the samples need to be in a very short distance with the objective lens. What knob must be used to avoid breakage of glass slide while focusing the sample?

• fine adjustment knob

• coarse adjustment knob

• light intensity knob

• base knob.

Which location must be avoided for storage of microscope?

• hanged cabinet near the air-condition

• cabinet near the sink

• a table near the refrigerator

• locker cabinet near the table

In focusing the sample, why is it better start by turning the stage away from the objective lens than doing the other way around?

• The lens might be damaged.

• The stage must be damaged.

• The base might be damaged.

• The glass slide might be damaged.