Exploring Microscopes and Magnification

Which part of a light microscope is used to adjust the amount of light passing through the specimen?

• Objective lens

• Diaphragm

• Eyepiece

• Stage

What is the total magnification when using a 10x eyepiece and a 40x objective lens?

• 4x

• 40x

• 400x

• 100x

Which part of the microscope should you use to bring the specimen into sharp focus at high power?

• Coarse focus knob

• Fine focus knob

• Stage clips

• Light source

What is the function of the stage on a microscope?

• To hold the lenses

• To support the slide

• To adjust the light

• To magnify the image

If you are using a 4x objective lens and a 10x eyepiece, what is the total magnification?

• 14x

• 40x

• 400x

• 10x

Which part of the microscope do you look through to see the specimen?

• Objective lens

• Eyepiece

• Stage

• Arm

What is the correct way to carry a microscope?

• By the eyepiece only

• By the base and the arm

• By the stage

• By the objective lens

If a specimen is 0.5 mm long and appears 50 mm long under the microscope, what is the magnification?

• 10x

• 25x

• 100x

• 5x

Which part of the microscope moves the stage up and down for focusing?

• Arm

• Coarse focus knob

• Diaphragm

• Base

What should you do before switching to a higher power objective lens?

• Lower the stage completely

• Centre the specimen in the field of view

• Turn off the light source

• Remove the slide