Microscope Function and Magnification

This video tutorial covers the basics of using a compound light microscope, including its components, magnification levels, and how to prepare and mount specimens. It explains the function of different lenses and the importance of focusing techniques to achieve clear images. The tutorial also touches on the limitations of light microscopes and the use of electron microscopes for higher magnifications.

What is the primary function of a compound light microscope?

• To magnify objects using multiple lenses

• To analyze chemical compositions

• To magnify objects using a single lens

• To provide a 3D view of objects

How much does the eyepiece alone magnify an object?

• 40 times

• 10 times

• 20 times

• 5 times

What is the total magnification when using the blue objective lens?

• 200 times

• 100 times

• 400 times

• 1000 times

At what magnification does a light microscope reach its limit?

• 500 times

• 1000 times

• 2000 times

• 5000 times

What is the main advantage of an electron microscope over a light microscope?

• It is more portable

• It is cheaper

• It uses visible light

• It provides higher magnification

What is the purpose of the stage clips on a microscope?

• To adjust the focus

• To rotate the objective lenses

• To hold the slide in place

• To change the light intensity

Why is it important to start with the lowest objective lens when viewing a specimen?

• To avoid damaging the slide

• To save time

• To ensure the specimen is centered

• To get the highest magnification first

What is the function of the coarse focus knob?

• To rotate the objective lenses

• To adjust the light intensity

• To change the eyepiece magnification

• To move the stage up and down

How can you achieve a clearer image after using the coarse focus?

• By rotating the eyepiece

• By changing the slide

• By using the fine focus knob

• By adjusting the light source

What should you do if you cannot find the specimen under the microscope?

• Rotate the eyepiece

• Ensure the specimen is above the light source

• Switch to a higher magnification

• Increase the light intensity