Physics

Power of a lens Definition: The power of a lens means its power of convergence in case of a convex lens or its power of…

Microscope There are many things in front of us that we cannot with our eyes. Besides, there are many things which we see by bare…

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,…

Laws of electromagnetic induction: Electro-magnetic induction is the production of an electromotive force across an electrical conductor in a changing magnetic field. So, the process…

Cycle of variation: The process of changing the alternating electromotive force or current starting from zero to a maximum value, then decreasing to zero and…

Amplitude: The maximum value of the electromotive force or current in any direction is called amplitude. Amplitude is the utmost value of current or voltage.…