A ray of light enters a diamond from air. If the refractive index of diamond is 2.42, by what percent does the speed of light reduce on entering the diamond ?

Refractive index of diamond is 2. Speed of ligh in it is ...... Cm // s.

Find critical angle of diamond whose refractive index is 2.42.

The speed of the light in a diamong is 1, 24,000 km/s. Find the refractive index of diamond if the speed of light in air is 3,00,000 km/s. (AS_(1))

The optical properties of a medium are governed by the relative permitivity (epsi_(r)) and relative permeability (mu_(r)) . The refractive index is defined as sqrt(mu_(r)epsi_(r))=n . For ordinary material epsi_(r)gt0 and mu_(r)gt0 and the positive sign is taken for the square root. In 1964, a Russian scientist V. Veselago postulated the existence of material with epsi_(r)lt0andmu_(r)lt0 . Since then such 'metamaterials' have been produced in the laboratories and their optical properties studied. For such materials n=-sqrt(mu_(r)epsi_(r)) . As light enters a medium of such refractive index the phases travel away from the direction of propagation. (i) According to the description above show that if rays of light enter such a medium from air (refractive index = 1) at an angle theta in 2^(nd) quadrant, then the refracted beam is in the 3^(rd) quadrant. (ii) Prove that Snell's law holds for such a medium.

A ray of light incident from air on a glass plate of refractive index n is partly reflected and partly refracted at the two surfaces of the glass. The displacement y_(0) in the figure is

A ray of light enters a diamond (n=2) from air and is being internally reflected near the bottom as shown in the figure . Find the maximum value of angle theta possible.

Consider a ray of light incident from air onto a slab of glass (refractive index n) of width d, at an angle theta . The phase difference between the ray reflected by the top surface of the glass and the bottom surface is

A ray of light enters in air from glass. What wi be deviation angle if angle of incidence is 50^@ Take refractive index of glass 1.5.