Review Questions 1. If the ocular lens is 10x, what would be the total magnifica

Question

Review Questions 1. If the ocular lens is 10x, what would be the total magnification for the following objective lenses? a. 5x b. 17x C. 35x 2. What is the function of the iris diaphragm of the microscope? 3. If the diameter of the field of view is 5.6 mm at 40x what would the diameter be at 80x? 4. What is the name of the thin glass plate placed on top of a specimen? 5. The microscope that you use in lab is an) a. compound microscope b. dissecting microscope. 6. What is the name of the circle you see when you look through the ocular lens of the microscope? c. electron microscope. 7. When you switch from a low-power objective lens (for example, 4x) to a higher-power objective lens (for example, 10x), what happens to the working distance between the lens and the coverslip? 8. What happens to the field of view when you change from a low-power objective lens to a higher-power objective lens? Does it increase or decrease? 9. When should you use the scanning lens on the microscope? 10. How should you clean the lenses of a microscope? 11. What is the proper way to carry the microscope in lab?

Explanation / Answer

1) total magnification = ocular lens × objective lens

a) 10x X 5x = 50x

b) 10x X 17x = 170x

c) 10x X 35x = 350x

2) the amount of light that reaches the specimen is control by iris diaphragm of microscope

3) 5.6 / 2 = 2.8

4)coverslip

5) compound microscope

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