Microscope Notes

Multiple Choice

Which of the following statements best describes how a compound light microscope works?

• It uses a single lens to magnify objects.

• Light passes through a sample and two lenses to create and magnify an image.

• It uses mirrors to reflect light onto the sample.

• It only works with non-living samples.

Multiple Choice

Why is the invention of the microscope considered significant in the field of science?

• It was the first tool used for chemical analysis.
• It replaced the need for laboratory animals in experiments.
• It allowed scientists to see the stars more clearly.
• The microscope enabled the discovery of microorganisms and cells, revolutionizing biology and medicine.

Multiple Choice

Which part of the microscope is also known as the eyepiece and is used to view the specimen?

• Ocular lens

• Objective lens

• Stage

• Base

Multiple Choice

What is the function of the revolving nosepiece on a microscope?

• It rotates to change between different objective lenses.

• It holds the slide in place.

• It supports the microscope.

• It allows the user to hold the microscope securely.

Multiple Select

Which of the following are powers of objective lenses found on a microscope?

• Low (4X)

• Medium (10X)

• High (40X)

• Ocular (10X)

Multiple Choice

Which of the following explains the function of the diaphragm on the microscope?

• The diaphragm magnifies the specimen for better viewing.
• The diaphragm regulates light intensity and contrast in microscopy.
• The diaphragm adjusts the focus of the microscope.
• The diaphragm holds the slides in place during observation.

Fill in the Blanks

The part of the microscope that holds the slide and allows light to pass through the specimen is called the

.

Multiple Choice

Which part of the microscope is responsible for holding the slide in place for viewing?

• Stage clips

• Light source

• Coarse adjustment knob

• Eyepiece

Multiple Choice

What is the main function of the coarse adjustment knob on a microscope?

• Moves the stage up and down

• Fine tunes the focus

• Holds the slide in place

• Shines light upward

Fill in the Blanks

The total magnification of a microscope with a 10X objective lens and a 10X eyepiece is

X.

Fill in the Blanks

The total magnification of a microscope with a 40X objective lens and a 10X eyepiece is

X.

Fill in the Blanks

The total magnification of a microscope with a 4X objective lens and a 10X eyepiece is

X.

Multiple Select

Which of the following are correct safety practices when using a microscope?

• Always carry the microscope by the arm and the base.

• Clean the lens with lens paper only.

• Start viewing a specimen on the highest power.

• Always lower the stage before putting the microscope away.

Multiple Choice

Why should you not use the coarse adjustment knob with the high power objective lens?

• You could break the slide.

• It will not focus the image.

• It will damage the eyepiece.

• It will turn off the light source.