by Rajan Gupta | Aug 25, 2020 | Refraction
Following are the rules which are used for obtaining the images formed by spherical lenses. A ray of light from the object parallel to the principal axis of a lens passes through the principal focus (of a convex lens) or appears to pass through the principal focus (of...
by Rajan Gupta | Aug 25, 2020 | Refraction
A lens is a portion of a transparent glass bound by two spherical surfaces. Lenses are of two types: Convex Lens or Convergent Lens:- A convex lens is thick in the middle and thin at the edges. Concave Lens or Divergent Lens:- A concave...
by Rajan Gupta | Aug 24, 2020 | Refraction
Following are the effects of refraction of light in our daily life. A swimming pool always looks shallower than it really is, because the light coming from the bottom of the pool bends when it comes out at the surface due to refraction of light. A straight stick which...
by Rajan Gupta | Aug 24, 2020 | Refraction
Following are the laws of refraction of light: Whenever light goes from one medium to another the velocity of light changes. The incident ray, the refracted ray and the normal at the point of incidence, all lie in the same plane. The ratio of sine of the angle of...
by Rajan Gupta | Aug 24, 2020 | Refraction
The refractive index of a medium may be defined as the ratio of the speed of light in air (or vacuum) to the speed of light in the medium. Thus, Refractive index = The refractive index of a medium has no units and it is represented by the...
by Rajan Gupta | Aug 24, 2020 | Refraction
Following are the rules for getting the direction of bending of a ray of light. Rule 1 When a ray of light goes from an optically rarer medium to an optically denser medium, it bends towards the normal. In this case the angle of refraction will be smaller than the...
Recent Comments