Question

using a compound light microscope
problem: what is the structure and basic use of the compound light microscope?
introduction: many objects are too small to be seen with the naked eye. one of the most important tools used by biologists that can help magnify, or visually enlarge objects, is the compound light microscope.
a compound light microscope consists of a light source or mirror that illuminates the specimen being observed, an objective lens that magnifies the image of the specimen, and an eyepiece, or ocular lens, which further magnifies the image being studied. these combined lenses refract or bend the light so that the image appears inverted. microscopes also increase the resolution of an image. resolution is the ability to distinguish between two points that are close together. the greater the resolution, the sharper the image.
pre - lab activity: using the diagram below, locate the different parts of your microscope and use it, along with your knowledge of microscopes, to answer the following pre - lab questions.
the eyepiece of a microscope usually has a magnification of 10x. each objective also has its own magnification. the lowest powered objective is called the scanning lens (usually 4x). next, the low - power lens is usually 10x, and the longest objective is the high - power lens (40x).
to calculate the total magnification of the microscope at a given setting, multiply the objective lens magnification by the eyepiece magnification. record the magnifications available on your microscope in the table below.
data table 1

objective	magnification of objective	magnification of eyepiece	total magnification
scanning
low
high

Explanation:

Step1: Identify objective magnifications

Scanning lens is 4x, low - power lens is 10x, high - power lens is 40x.

Step2: Identify eyepiece magnification

Eyepiece magnification is 10x.

Step3: Calculate total magnifications

For scanning lens: $4\times10 = 40$x.
For low - power lens: $10\times10=100$x.
For high - power lens: $40\times10 = 400$x.

Answer:

Objective	Magnification of Objective	Magnification of Eyepiece	Total Magnification
Low	10x	10x	100x
High	40x	10x	400x