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Magnification

The ratio of the size of the image to the size of object is called magnification.
  • Transverse magnification:
     
    113343.png
     
    (use sign convention while solving the problem)
  • Longitudinal magnification: 113357.png
     
    For very small object
     
    113374.png
  • Areal magnification: 113385.png
     
    (Ai = Area of image, Ao = Area of object)
Relation between object and image speed If an object moves with constant speed (V0) towards a convex lens from infinity to focus, the image will move slower in the beginning and then faster. Also
 
113397.png




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