science 7

What is the function of the eyepiece in a microscope?

• The eyepiece adjusts the stage height.

• The eyepiece focuses light onto the specimen.

• The eyepiece magnifies the image for viewing.

• The eyepiece controls the light intensity.

Name the part of the microscope that holds the slides in place.

• stage

• lens

• arm

• base

What type of microscope uses visible light to magnify specimens?

• Confocal microscope

• Fluorescence microscope

• Electron microscope

• Light microscope

What is the main difference between a compound microscope and a stereo microscope?

• A compound microscope is designed for outdoor use, while a stereo microscope is meant for laboratory settings.

• A compound microscope has a single lens, whereas a stereo microscope has multiple lenses for higher magnification.

• A compound microscope is used for viewing living organisms, while a stereo microscope is used for dead specimens.

• The main difference is that a compound microscope provides high magnification for small specimens, while a stereo microscope offers a 3D view for larger specimens.

How does the objective lens affect the magnification of a specimen?

• The objective lens is solely responsible for the illumination of the specimen.

• The objective lens directly influences the magnification by its focal length and numerical aperture.

• The objective lens only affects the color of the specimen.

• The objective lens has no impact on the overall image quality.

What is the purpose of the stage in a microscope?

• To hold and support the specimen for observation.

• To adjust the focus of the microscope.

• To illuminate the specimen from below.

• To magnify the specimen for better visibility.

What type of microscope is used to view very small structures like viruses?

• Light microscope

• Fluorescence microscope

• Confocal microscope

• Electron microscope

How do you calculate total magnification in a microscope?

• Total magnification = Objective magnification - Eyepiece magnification.

• Total magnification = Objective magnification / Eyepiece magnification.

• Total magnification = Eyepiece magnification + Objective magnification.

• Total magnification = Objective magnification x Eyepiece magnification.

What is the role of the diaphragm in a microscope?

• The diaphragm magnifies the specimen in a microscope.

• The diaphragm focuses the image in a microscope.

• The diaphragm holds the objective lenses in place.

• The diaphragm regulates light intensity in a microscope.

What is the first step in preparing a microscope slide?

• Prepare the specimen

• Adjust the microscope settings

• Clean the slide.

• Label the slide