Microscope Care & Use

A 10x objective lens is also known as a what?

• Scanning lens

• Low power lens

• High power lens

• oil Immersion lens

What can happen if the stage is adjusted too close to the objectives lens causing contact?

• The microscope housing could be damaged.

• The slide could be damaged.

• The objective lens could be damaged.

• All of these options.

When cleaning immersion oil from a 100x objective lens, what should be used?

• A Kimwipe

• A damp cloth

• A dry paper towel

• Specialized lens paper.

What is immersion oil and why is it used?

• The oil is used to hold a specimen on the slide.

• It is a lubricant that makes rotating objective lenses into position easier.

• Immersion oil is used to polish the lenses of microscopes.

• Immersion oil refocuses light improving the resolution of high power objective lenses.

When switching to the 100x lens, what should you use?

• A low-intensity light source.

• A drop or two of immersion oil.

• A wet cloth to clean the lens prior to use.

• A 100x objective should only be used with a 15x eyepiece lens.

Immersion oil can be used with all objective lenses.

• True

• False

What are the three typical magnifications for eyepieces found on common lab microscopes?

• 5x, 10x, 15x

• 4x, 10x, 100x

• 10x, 40x, 100x

• 4x, 10x, 40x

The 100x objective lens is also known as what?

• Low power lens

• Scanning lens

• Oil immersion lens

• High power lens

How is total magnification calculated?

• Eyepiece power times objective lens power.

• Eyepiece power added to objective lens power.

• Objective lens power added to the light intensity setting.

• Eyepiece power divided by objective lens power.

What is the total magnification if you are using two 15x eyepieces and a 10x objective lens?

• 100x

• 150x

• 300x

• 40x