Question 1

Which part of the microscope is responsible for holding and rotating the objective lenses to change magnification?

Accepted Answer

Nose piece (revolving nosepiece or turret)

Question 2

If you are using a 10X eyepiece lens and a 40X high-power objective lens, what is the total magnification of the specimen?

Accepted Answer

$$10 	imes 40 = 400$$

Question 3

Which of the following is NOT a typical magnification for an eyepiece lens?

Accepted Answer

25X

Question 4

What is the main function of the microscope's arm?

Accepted Answer

To connect the tube to the base and provide support

Question 5

Which lens would you use first to locate a specimen on a slide?

Accepted Answer

Scanning lens (4X)

Question 6

A student is viewing a specimen using a 15X eyepiece and a 10X low-power objective lens. What is the total magnification?

Accepted Answer

$$15 	imes 10 = 150$$

Question 7

Which part of the microscope is typically adjustable to accommodate different users' eyes?

Accepted Answer

Eyepiece lens

Question 8

What is the primary function of the body of the microscope?

Accepted Answer

To hold the eyepiece and objective lenses in alignment

Question 9

Which combination of lenses would provide the highest total magnification?

Accepted Answer

Eyepiece lens (20X) and high-power lens (40X)

Question 10

Why is it important to start with the scanning lens (4X) when first viewing a specimen?

Accepted Answer

It allows for a wider field of view to easily locate the specimen

Question 11

Which part of the microscope is described as the main section, minus the base or any illuminators?

Accepted Answer

Body

Question 12

If a microscope has a 10X eyepiece and you switch from a 4X scanning lens to a 40X high-power lens, by what factor does the total magnification increase?

Accepted Answer

$$\frac{400}{40} = 10$$

Question 13

Which lens is closest to the object being viewed on a microscope?

Accepted Answer

Objective lens

Question 14

A student is having trouble seeing a specimen clearly at high magnification. What is the most likely reason?

Accepted Answer

The specimen was not centered at low magnification before switching to high power

Question 15

Which of the following best describes the function of the objective lens?

Accepted Answer

To magnify the specimen at different levels

Microscope Parts and Their Functions (Observing the Cell)

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