Through the Compound Eye

How is the object magnified using a compound light microscope?

Light is provided either by a ​ (a)   or a small, built in lightbulb. There are 2 lenses, one in an ​ (b)   and one in the ​ (c)   .

• mirror
• objective lens
• eyepiece

What is the total magnification of an image when viewed using the low power objective?

• 40x

• 100x

• 400x

• 1000x

What is the total magnification of an image when viewed using the medium power objective?

• 40x

• 100x

• 400x

• 1000x

What is the total magnification of an image when viewed using the high power objective?

• 40x

• 100x

• 400x

• 1000x

What is the purpose of the mirror or bulb at the base of the microscope?

• Microscopes must only be used in a dark environment.

• To illuminate the specimen being viewed.

• To provide a heat source for the specimen.

• To see a reflection of your eye on the specimen.

Label the microscope.

d

b

a

c

e

f

g

h

Base

Fine Adjustment

Stage

Eyepiece

Objective Lens

Arm

Light

Coarse Adjustment