Question

1. label the microscope in the previous page to the best of your abilities using the list below.

• eyepiece
• high power objective
• lower power objective
• scanning objective
• tube
• coarse adjustment knob
• fine adjustment knob
• base
• arm
• nosepiece
• light
• diaphragm
• stage
• clips (2)

part ii: how does a microscope magnify?
there are three lenses in the microscope. the top lens is called the eyepiece. it is the lens closest to the eye. the other two lenses are called objectives. these are the lenses closest to the object. the object is on a microscope slide. different lenses magnify in different powers. the power of magnification is marked by a number with an x next to it. a lens that magnifies ten times is marked 10x. if the eyepiece is marked 10x and the objective 10x, then the total magnification is 100x. to find the total magnification of a microscope, just multiply the two magnifications. complete the table below by finding the total magnification for each pair of lenses.

1. use the table below to calculate the total magnification for each combination of eyepiece and objective lenses. show your calculations.

eyepiece	objective lens	magnification
10x	40x
10x	44x
5x	10x
5x	40x
20x	10x

Explanation:

Step1: Recall magnification formula

Total magnification = Eyepiece magnification × Objective - lens magnification

Step2: Calculate for first row

For eyepiece 10x and objective 10x, total magnification = 10×10 = 100x

Step3: Calculate for second row

For eyepiece 10x and objective 40x, total magnification = 10×40 = 400x

Step4: Calculate for third row

For eyepiece 10x and objective 44x, total magnification = 10×44 = 440x

Step5: Calculate for fourth row

For eyepiece 5x and objective 10x, total magnification = 5×10 = 50x

Step6: Calculate for fifth row

For eyepiece 5x and objective 40x, total magnification = 5×40 = 200x

Step7: Calculate for sixth row

For eyepiece 20x and objective 10x, total magnification = 20×10 = 200x

Answer:

Eyepiece	Objective Lens	Magnification
10x	40x	400x
10x	44x	440x
5x	10x	50x
5x	40x	200x
20x	10x	200x