Understanding Microscope Magnification

What is the role of the objective lenses in a brightfield microscope?

• To illuminate the specimen

• To focus and magnify the image

• To adjust the light intensity

• To hold the specimen in place

What does it mean when objective lenses are described as "parfocal"?

• They have the same magnification power

• They remain focused when switching between lenses

• They are used to adjust the light source

• They are interchangeable with eyepiece lenses

What is the standard magnification power of the eyepiece lens in a brightfield microscope?

• 5x

• 10x

• 20x

• 50x

If the objective lens has a magnification of 40x, what is the total magnification when using a standard eyepiece lens?

• 400x

• 40x

• 10x

• 100x

Which of the following best describes the image seen through the eyepiece of a brightfield microscope?

• Real image

• Virtual image

• Inverted image

• Dim image

Calculate the total magnification if the objective lens is 100x and the eyepiece lens is 10x.

• 1000x

• 110x

• 100x

• 10x

Which component of the brightfield microscope is primarily responsible for illuminating the specimen?

• Objective lens

• Eyepiece lens

• Condenser

• Stage

If a brightfield microscope has an objective lens with a magnification of 60x, what is the total magnification with a 10x eyepiece?

• 600x

• 60x

• 10x

• 70x

What is the range of magnification power for objective lenses in a brightfield microscope?

• 10x-100x

• 40x-1000x

• 5x-50x

• 100x-2000x

Which of the following equations correctly represents the total magnification power of a brightfield microscope?

• Total Magnification = Magnification of the objective lens + Magnification of the eyepiece

• Total Magnification = Magnification of the objective lens - Magnification of the eyepiece