L2 Microscopy

If a microscope has an objective lens with a magnification of 40x and an ocular lens with a magnification of 10x, what is the total magnification of the microscope when using these lenses together?

• 40x

• 10x

• 400x

• 50x

Arrange the following steps in the correct order for properly using a microscope to observe a specimen:

1. 1- Place the slide on the stage and secure it with stage clips.

2. 2- Adjust the diaphragm to control the amount of light.

3. 3- Turn the coarse adjustment knob to bring the objective lenses close to the slide.

4. 4- Look through the ocular lens and use the fine adjustment knob to sharpen the image.

5. 5- Rotate the revolving nosepiece to select the desired objective lens.

6. 6- Turn on the illuminator.

• 1, 2, 5, 3, 6, 4

• 6, 2, 5, 3, 1, 4

• 1, 6, 2, 5, 3, 4

• 6, 1, 2, 5, 3, 4

Which part of the microscope is used to focus light onto the specimen?

• Objective Lens

• Ocular Lens

• Condenser

• Diaphragm

What is the primary function of the objective lenses on a microscope?

• To illuminate the specimen

• To magnify the image of the specimen

• To adjust the amount of light entering the microscope

• To hold the slides in place

Which part of the microscope is responsible for adjusting the distance between the objective lenses and the specimen?

• Coarse Adjustment Knob

• Fine Adjustment Knob

• Revolving Nosepiece

• Stage Clips

What is the purpose of the ocular lens in a microscope?

• To focus the light on the specimen

• To provide the final magnification and view the specimen

• To hold the specimen in place

• To regulate the light intensity

Which part of the microscope holds the glass slides and can be moved up and down to adjust the focus?

• Stage

• Base

• Arm

• Condenser

What is the function of the diaphragm or iris on a microscope?

• To rotate the objective lenses

• To control the amount of light reaching the specimen

• To magnify the specimen

• To focus the image on the ocular lens

Which component of the microscope is used to change the magnification of the specimen?

• Illuminator

• Revolving Nosepiece

• Stage

• Objective lens

What is the function of the base of the microscope?

• To hold the stage in place

• To provide support and stability for the microscope

• To adjust the magnification

• To focus the image