Lab 3

Question 1

LAB3. What is a compound microscope?

Answer 1

A microscope with two magnifying lenses: objective and ocular

Question 2

LAB3. The standard magnification for ocular lens is

Answer 2

10x

Question 3

LAB3. If we are using an objective with a magnification of 40x, then the total magnification for that combination would be …?

Answer 3

10×40 = 400x

you are adding the ocular and objective lens together

Question 4

LAB3. At the top of the microscope, the lenses which we look through are called…?

Answer 4

Eyepieces or ocular lenses

Question 5

LAB3. The shortest objective is called..?

Answer 5

Scanning lens
And has a magnification of 4x

(total magnification: 4×10 = 40)

Question 6

LAB3. After the scanning lense what comes next?

Answer 6

10x - low power

Question 7

LAB3. What is the third largest lens called?

Answer 7

High dry (40x)

Question 8

LAB3. What is the largest lens of all?

Answer 8

Oil immersion at 100x

Question 9

LAB3. What does parfocal mean?

Answer 9

It means that when one lens is in focus, the others are as well

Question 10

LAB 3. The platform below the objectives is called the…?

Answer 10

Stage: which holds the slide for viewing

Question 11

LAB3. Just below the stage is an apparatus called the..?

Answer 11

Condenser: it is a lens whose function is to focus the light onto your specimen/slide

Question 12

LAB3. Refraction

Answer 12

As light passes from one medium into a medium of different density, the light bends

Question 13

LAB3. How often should you clean the lens of your microscope?

Answer 13

Before and after use, same for oil and even more

Question 14

LAB3. What is the total magnification of the microscope when you’re using the oil immersion lens?

Answer 14

100x

Question 15

LAB3. What is a simple microscope?

Answer 15

A microscope with a single magnifying lens