Power of a Lens and Combination of Thin Lenses in Contact - An Introduction

  • In physics, a lens is a transparent material with curved surfaces that refracts light, converging or diverging it.
  • The power of a lens is a measure of its ability to bend light rays.
  • The power of a lens is denoted by the symbol “P” and is measured in diopters (D).
  • The formula to calculate the power of a lens is: P = 1 / f, where “f” is the focal length of the lens.
  • A lens with a positive power is called a converging lens, while a lens with a negative power is called a diverging lens.
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Power of a Lens and Combination of Thin Lenses in Contact - An Introduction In physics, a lens is a transparent material with curved surfaces that refracts light, converging or diverging it. The power of a lens is a measure of its ability to bend light rays. The power of a lens is denoted by the symbol “P” and is measured in diopters (D) . The formula to calculate the power of a lens is: P = 1 / f , where “f” is the focal length of the lens. A lens with a positive power is called a converging lens , while a lens with a negative power is called a diverging lens .