Magnification Revision

• Why are microscopes useful?

  They allow us to see things we can’t see with our own eyes as they are too small.
• What are two types of microscopes?

  Electron microscope and light microscope
• components of a light microscopes

  
• Total Magnification = Eye piece lens x Objective lens
• this can help

  
• Practice Question

  1. Calculate the total magnification, if the eye piece is x10 and the objective lens is x60  10x x 60x = X600
• Practice Question

  Calculate the total magnification, if the eye piece is x10 and the objective lens is x40

  10x x 40x = 400x
•  Practice Question

  Calculate the total magnification, if the eye piece is x10 and the objective lens is x500

  x10 x x500= x5000
• Practice Question

  Calculate the total magnification, if the eye piece is x5 and the objective lens is x100

  x5 x x100 = x500
• Practice Question

  Calculate the total magnification, if the eye piece is x10 and the objective lens is x200 

  x10 x x200 = x2000
• Practice Questions

  1. Calculate the total magnification, if the eye piece is x10 and the objective lens is x60 
  2. Calculate the total magnification, if the eye piece is x10 and the objective lens is x40 
  3.  Calculate the total magnification, if the eye piece is x10 and the objective lens is x500
  4. Calculate the total magnification, if the eye piece is x5 and the objective lens is x100
  5. Calculate the total magnification, if the eye piece is x10 and the objective lens is x200 
• Rearranging Questions

  1. Calculate the objective lens, if the total magnification is x4000 and the eye piece is x10
  2. Calculate the objective lens, if the total magnification is x500 and the eye piece is x5 
  3. Calculate the objective lens, if the total magnification is x300 and the eye piece is x10 
  4. Calculate the objective lens, if the total magnification is x200 and the eye piece is x5
  5. Calculate the objective lens, if the total magnification is x1200
• MAGNIFICATION EQUATIONS

  Magnification = Size of image/Actual object

  
• Examples

  1. Calculate the magnification, if the size of the image is 5mm and the real object is 0.125mm

  2. Calculate the real object size if the image is 10mm and the magnification was x200

  3. Calculate the image size if the real object is 0.05mm and the magnification is x1000
• Practice Questions

  1. Calculate the magnification, if the size of the image is 10mm and the real object is 0.125mm 
  2. Calculate the magnification, if the size of the image is 100mm and the real object is 0.01mm 
  3. Calculate the magnification, if the size of the image is 120mm and the real object is 0.2mm 
  4. Calculate the magnification, if the size of the image is 60mm and the real object is 0.04mm 
  5. Calculate the magnification, if the size of the image is 30mm and the real object is 0.3mm 
• Rearranging Questions - MAGNIFICATION EQUATIONS

  1. If an object has been magnified x4000 and the real object is 0.5mm. What is the image size in mm?  

  2. If an object has been magnified x500 and the real object is 0.5mm. What is the image size in mm? 

  3. A student magnified a cell x1000, the real cell was 0.37mm. How big was the image in mm?  

  4.  A student magnified a cell x400, the real cell was 0.4mm. How big was the image in mm?  

  5. If the magnification is x500 and the image size is 12.4mm. Calculate the real size in mm