A ray of light travelling in air is incident at grazing incidence on a slab with variable refractive index, n `(y) = [ky^(3//2) + 1 ]^(1//2)` where `k=1 m^(-3//2)` and follows path as shown in the figure. What is the total deviation produced by slab when the ray comes out.

A ray of light travelling in air is inciden at angle of inciden 30^@ on one surface of slab in which refractive index varies with y. The light travels along the curve y =4x^(2) ( y and x are in meter) in the slab. Find out the refractive index of the slab at y=1//2m in the slab.

A ray of light travelling in air is incident at grazing angle (incident angle= 90^(@)) on a long rectangular slab of a transparent medium of thickness t=1.0 (see figure). The point of incidence is the origin A(O,O) .The medium has a variable index of refraction n(y) given by : n(y)=[ky^(3//2)+1]^(1//2) ,where k= 1.0m^(-3//2) .the refractive index of air is 1.0 (i) Obtain a relation between the slope of the trajectory of the ray at a point B(x,y) in the medium and the incident angle at that point (ii) obtain an equation for the trajectory y(x) of the ray in the medium. (ii) Determine the coordinates ( x_(1),y_(1)) of the point P .where the ray the ray intersects upper surface of the slab -air boundary. Indicate the path of the ray subsequently.

A ray of light travelling in air is incident at grazing angle (incident angle= 90^(@)) on a long rectangular slab of a trasnparent medium of thickness t=1.0 (see figure). The point of incidence is the origin A(O,O) .The medium has a variable index of refraction n(y) given by : n(y)=[ky^(3//2)+1]^(1//2) ,wherek= 1.0m^(-3//2) .the refrative index of air is 1.0 (i) Obtain a relation between the slope of the trajectory of the ray at a point B(x,y) in the medium and the incident angle at that point (ii) obtain an equation for the trajectory y(x) of the ray in the medium. (ii) Determine the coordinates ( x_(1),y_(1)) of the point P .where the ray the ray intersects upper surface of the slab -air boundary. Indicate the path of the ray subsequently.

A ray of light suffers minimum deviation when incident on an equilateral prism of refractive index sqrt2 . What is the angle of incidence ?

A monochromatic light of wavelength 4800 A travelling in air is incident on a glass slab of refractive index 1.5, its wavelenght in glass slab is