Reflection

Power of a lens is a measure of the degree of convergence or divergence of light falling on it. The power of a lens (P)…

Let consider an object OO’ placed on the principal axis with its height perpendicular to the principal axis as shown in Figure. The ray OP…

Let consider a portion of a spherical surface AB separating two media having refracting indices μ1 and μ2 (Figure). This is symmetrical about an axis…

The sign convention followed in the spherical mirror is also applicable to refraction at spherical surface. In addition to this two more sign conventions to…

When a ray of light travels from one transparent medium into another medium, it bends while crossing the interface, separating the two media. This phenomenon…

The value of velocity of light in vacuum is of great importance in science. The following are some of the important fields where the value…

A.A. Michelson, an American physicist, spent many years of his life in measuring the velocity of light and he devised a method in the year…

The total internal reflection is the basic principle of optical fibre. An optical fibre is a very thin fibre made of glass or quartz having…

Diamond Total internal reflection is the main cause of the brilliance of the diamond. The refractive index of diamond with respect to air is 2.42.…

Let consider an object OO’ on the principal axis of a concave mirror beyond C. The incident and the reflected rays are shown in the…