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What do You Mean by the Power of a Lens?
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Power of Lens : The ability of lens to converges or diverges the ray of light is called the power of lens.

  • The Power of the lens depends on the focal length of the lens.
  • The unit of the power of the lens is Diopter. It denoted by D.
  • One diopter is the power of the lens whose focal length is one meter.
  • A lens either converges or diverges the ray of light.
  • The convex lens converges the ray of light and the concave lens diverges the ray of light.
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