Microscopes and magnification

Which letter represents the eyepiece lens?

• A

• E

• H

Which letter represents the inbuilt light?

• B

• C

• H

Which letter represents the stage?

• D

• F

• G

Which letter represents the coarse focus?

• C

• D

• G

Which letter represents the objective lens?

• A

• C

• E

Which letter represents the iris diaphragm?

• E

• F

• G

The microscopes at school can see things which are measured in nanometres. What do you call microscopes which can measure things as small as nanometres?

• electric microscope

• binocular microscope

• electron microscope

A light microscope as a 10X eyepiece lens lined up with a 4X objective lens.

What is the total magnification?

• 14X

• 40X

• 400X

An object is 3.4cm long. Convert this to millimetres.

• 3.4mm

• 34mm

• 340mm

Every square on the grid represents 5 metres.

How tall is the tree in reality?

• 1 metre

• 5 metres

• 25 metres

• 50 metres