Exercise 2 Microscopy Name 2 cabase Msegens 1 If the ocular

Exercise 2 Microscopy Name 2 cabase Msegens. 1. If the ocular lens is 10x, what are the total magnifications for the following objective lenses? a b. 15x 20x 2. what is the name of the thin piece of glass that is placed on top of a specimen? 3. The microscope that you use in lab is a(n) a. compound light microscope b. dissecting microscope c. electron microscope 4. What is the name of the circle you see when you look through the ocular lens e microscope? Date

Solution

1 By multiplying the powers of lenses we get the total magnification.

a. total magnification = 10*7= 70X

b. total magnification = 10*15= 150X

c.total magnification = 10*20= 200X

2. Cover slip is placed over the specimen when viewed with a microscope. It protects and keeps the specimen in place while viewing, pressing the specimen flat (of even thickness).

3. The microscope we use in lab is usually a compound microscope. It is used for observing the structure of a cell, tissue or organ in sections.

4. Field of view is the name given to the observable area of the specimen when we look through the lens of the microscope. It varies according to the type of microscope used. When the magnification is increased, the field of view is reduced.