Magnification

• What is magnification?

  Making small things look bigger
• What is the formula for magnification?

  Image size ÷ actual size
• If an object’s image is 200 mm and the actual size is 10 mm, what is the magnification?

  x20
• Why do scientists use magnification?

  To make objects look bigger and study details
• If a cell is 0.1 mm in real life and its image is 2 mm, what is the magnification?

  x20
• What happens if you increase magnification too much on a light microscope?

  The image becomes blurry
• What unit is used to measure very small objects like cells?

  Micrometres
• What magnification does a microscope with an image size of 50 mm and an actual size of 5 mm give?

  x10
• What does a magnification of x100 mean?

  The object looks 100 times bigger
• If the image of a cell is 500 mm and the actual size is 5 mm, what is the magnification?

  x100