calculating magnification

Question 1

What is the formula for calculating magnification?

Answer 1

Magnification (M) = size of image (1) / actual size (A)

Question 2

What units should be used when measuring the size of the image?

Answer 2

Millimetres

Question 3

Why is it important to convert actual size to the same units as the size of the image?

Answer 3

To ensure accurate magnification calculations

Question 4

If the size of the image is 50 mm and the actual size is 50 um, what is the magnification?

Answer 4

1000

Question 5

How many nanometres are in one micrometre?

Answer 5

1000 nanometres

Question 6

Convert 50 um to mm.

Answer 6

0.05 mm

Question 7

What is the first step in calculating magnification from an image?

Answer 7

Measure the size of the image in mm

Question 8

True or False: You should show your working out when calculating magnification.

Answer 8

True

Question 9

What should you always include in your answer when calculating magnification?

Answer 9

Units

Question 10

Fill in the blank: Magnification = size of image / _______.

Answer 10

actual size

Question 11

What is the actual size of the cell shown in the assessment practice example?

Answer 11

200 um

Question 12

What is the purpose of the triangle provided in the text?

Answer 12

To help rearrange the magnification equation

Question 13

Convert 200 um to mm.

Answer 13

0.2 mm

Question 14

What should be done after measuring the size of the cell in mm?

Answer 14

Put both figures into the magnification equation

Question 15

What does M stand for in the magnification formula?

Answer 15

Magnification

Question 16

What is the relationship between micrometres and millimetres?

Answer 16

1000 micrometres = 1 mm

Question 17

True or False: The actual size of an object can be given in different units.

Answer 17

True

Question 18

Fill in the blank: 1000 mm = _______.

Answer 18

1 m