Concave spherical mirrors form enlarged images with respect to their object size, while convex spherical mirrors form smaller image with respect to the object size. What is the underlying reason for this?     Converging mirrors obey the law of reflection, while diverging mirrors obey the law of refraction, and so, Snell’s law is only applied to diverging or convex mirrors.   Concave mirrors have outer curve facing the object and so incident light rays from top are reflected downward and thus causes an inversion of the orientation of the image.   Light rays reflected from a concave mirror converge on the focal point in the real side, while light rays incident to a convex mirror are scattered as these are reflected.   Light rays reflected from a concave or converging mirror always form virtual images, while light rays reflected from a convex or diverging mirror always form a real image.

Physics for Scientists and Engineers
10th Edition
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter34: The Nature Of Light And The Principles Of Ray Optics
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Concave spherical mirrors form enlarged images with respect to their object size, while convex spherical mirrors form smaller image with respect to the object size. What is the underlying reason for this?
 
 
  • Converging mirrors obey the law of reflection, while diverging mirrors obey the law of refraction, and so, Snell’s law is only applied to diverging or convex mirrors.
     
  • Concave mirrors have outer curve facing the object and so incident light rays from top are reflected downward and thus causes an inversion of the orientation of the image.
     
  • Light rays reflected from a concave mirror converge on the focal point in the real side, while light rays incident to a convex mirror are scattered as these are reflected.
     
  • Light rays reflected from a concave or converging mirror always form virtual images, while light rays reflected from a convex or diverging mirror always form a real image.
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