Microscopy and Magnification Quiz

What is the formula to calculate the actual size of a specimen from the image size?

• Actual Size = Image Size × Magnification

• Actual Size = Image Size / Magnification

• Actual Size = Magnification / Image Size

• Actual Size = Image Size + Magnification

• If the specimen's Image Size = 10 mm = 10,000 µm (since 1 mm = 1000 µm) and the image is

• Magnified 400x, what is the actual size of the specimen?

• 10 μm

• 15 μm

• 20 μm

• 25 μm

How do you calculate magnification using image size and actual size?

• Magnification = Image Size × Actual Size

• Magnification = Image Size / Actual Size

• Magnification = Actual Size / Image Size

• Magnification = Image Size + Actual Size

What is the purpose of a scale bar in an image?

• To measure the weight of the specimen

• To provide a reference for size

• To enhance the color of the image

• To adjust the brightness of the image

What do you need to know, to calculate magnification with a scale bar?

• The actual size of the specimen

• The 'real' distance the scale bar represents

• The image size

• How powerful the objective lens is

What does the term "image size" refer to?

• The weight of the specimen

• The size of the specimen image seen through the microscope

• The color of the specimen

• The brightness of the image

What is the actual size if the image size is 15,000 μm and the magnification is 300x?

• 50 μm

• 100 μm

• 150 μm

• 200 μm

What is the role of magnification in microscopy?

• To decrease the size of the specimen

• To increase the size of the specimen image

• To change the color of the specimen

• To adjust the weight of the specimen

What is the actual size if the image size is 30,000 μm and the magnification is 600x?

• 30 μm

• 40 μm

• 50 μm

• 60 μm

What is the length of the scale bar in the image in Worked Example 4?

• 5 mm

• 50 mm

• 100 mm

• 10 mm