Geometrical Optics

Experiment: Determination of the Focal Length and Power of a Lens The power of a lens is determined by its ability to create a difference…

Lens Maker’s Formula or Equation of Lens Formation The lens maker’s equation is a formula used for lenses gives us a relationship between the focal…

Law of Refraction according to Fermat’s Principle The law of refraction of light, Fermat’s principle or Snell’s Law states that the ratio of the sines…

Law of reflection Fermat’s principle states that “light travels between two points along the path that requires the least time, as compared to other nearby…

Fermat’s Principle – Concept We know, a light ray starting from a point after reflection or refraction if it travels least distance to reach another point,…