Microscope Function and Magnification

The video tutorial provides an overview of the compound light microscope, explaining its components, such as the oculars, objectives, and adjustment knobs. It details how to use the microscope, emphasizing the importance of the fine adjustment knob during lab practicals. The tutorial also covers how magnification is calculated and its impact on the field of view, illustrating how different objectives affect what is visible on a slide.

What is the primary reason the compound light microscope is called 'compound'?

• It uses multiple light sources.

• It has two magnifying lenses.

• It is made of complex materials.

• It can be used for multiple purposes.

Which part of the microscope holds it together?

• The light source

• The base

• The stage

• The arm

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

• To change the objective lens

• To adjust the light intensity

• To hold the slide in place

• To magnify the image

Which knob should you primarily use for focusing during a lab practical?

• Light adjustment knob

• Stage adjustment knob

• Fine adjustment knob

• Coarse adjustment knob

How is the total magnification of a microscope calculated?

• By adding the magnifications of the ocular and objective lenses

• By multiplying the magnifications of the ocular and objective lenses

• By subtracting the magnification of the ocular from the objective lens

• By dividing the magnification of the objective lens by the ocular

What is the magnification of the scanning objective lens?

• 100x

• 40x

• 10x

• 4x

What happens to the field of view as you increase the magnification?

• It remains the same

• It becomes clearer

• It increases

• It decreases

At 40x magnification, how many millimeter marks can you see on a ruler?

• About three

• About one

• About two

• About four

Which objective lens provides a total magnification of 100x?

• Low power objective

• Scanning objective

• High power objective

• Oil immersion objective

What is the effect of using the high power objective on the field of view?

• It makes the slide brighter

• It does not change the view

• It shows less of the slide

• It shows more of the slide