Show that for a material with refractive index `mu ge sqrt 2`, light incident at any angle shall be guided along a length perpendicular to the incident face.

What is the critical angle for materail of refractive index sqrt 2 ?

At what angle of incidence should light beam strike a glass slab of refractive index (mu=sqrt3) , such that the reflected and refracted rays are perpendicular to each other?

Light enters at an angle of incidence in a transparent rod of material of refractive index mu . The light once entered into it will not leave it through its lateral face, whatsoever be the value of angle of incidence, if

A convex lens made of a material of refractive index mu_1 , is kept in a medium of refractive index mu_2 , Parallel rays of light are incident on the lens. Complete the pathof rays of light emerging from the convex lens if mu_1 = mu_2 .

A soap flm of refractinve index 4//3 is illuminated by white light incident at an angle 45^@ .The transmitted length is examined in a spectroscope and a brigth band is found to be at 6,000 overset @A .Find the minimum thickness of the film.

A concave lens made of a material of refractive index mu_g is immersed in a medium of refractive index mu_l , greater than,A paprallel beam of light is incident on the lens. Trace the path of emerged rays

A convex lens made of a material of refractive index 'mu_1' is kept in a medium of refractive index mu_2 , Parallel rays of light are incident on the lens. Complete the pathof rays of light emerging fromthe convex lens if mu_1 < mu_2 .

A convex lens made of a material of refractive index mu_1 is kept ih a medium of refractive index mu_2 , Parallel rays of light are incident on the lens. Complete the path of rays of light emerging fromthe convex lens if mu_1 > mu_2 .