Microscope Measurement-H Flashcard2021

Front

What is the function of the arm of a microscope?

Back

The arm supports the body tube and connects it to the base, providing stability and allowing for easy handling.

Front

What is the total magnification of a microscope with a 10x ocular lens and a 30x objective lens?

Back

300x (Total magnification = ocular magnification x objective magnification = 10x x 30x).

Front

What is the largest field of view under a total magnification of 40x?

Back

The largest field of view is 2.5 mm.

Front

How does increasing the objective lens affect the field of view?

Back

Increasing the objective lens decreases the field of view. For example, if the known field of view is 2.5 mm at 10x and 4x, it becomes 0.25 mm at 40x.

Front

What is the estimated size of a ladybug when viewed under scanning power?

Back

About 1 mm.

Front

What is the purpose of the eyepiece in a microscope?

Back

The eyepiece, or ocular lens, magnifies the image produced by the objective lens, allowing the viewer to see the specimen.

Front

What is the relationship between magnification and field of view in microscopy?

Back

As magnification increases, the field of view decreases, making it easier to see details but harder to see the entire specimen.

Front

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

Back

The coarse adjustment knob is used to bring the specimen into general focus by moving the stage or the body tube.

Front

What is the difference between the ocular lens and the objective lens?

Back

The ocular lens is the lens you look through (usually 10x), while the objective lens is the lens closest to the specimen, with varying magnifications (e.g., 4x, 10x, 40x).

Front

What is the field of view at 10x magnification if the known field of view is 2.5 mm at 4x?

Back

The field of view at 10x magnification is approximately 1 mm.