Refraction and Laws of Refraction
Refraction is the phenomenon where a light changes direction as it travels from one medium to another with a different density. For light, this change in direction occurs because the speed of light varies in different materials.
Laws of Refraction
There are two laws of refraction which are mentioned below:
- The incident ray, the refracted ray, and the normal to the interface at the point of incidence all lie in the same plane. This means all three elements are essentially coplanar, like objects placed on a flat surface.
- Snell’s Law: It states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is refractive constant. This constant is known as the refractive index of the second medium relative to the first.
Ray Optics – Definition, Formula, Applications
Ray Optics is the study of properties of light and optical instruments by assuming that light travels in a straight line. It is also known as geometrical optics, which deals with the geometry of light. Light always travels in a straight line, and the direction in which the light rays propagate is called the ray of light. It studies the principles and laws governing the propagation of light, particularly in the absence of wave effects such as interference and diffraction.
In this article, we will learn about ray optics, reflection, refraction, concave and convex mirrors, lenses, and formulas related to them.
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