What is optical fibre? An object is placed at a depth ‘d’ in a medium of-refractive index `mu` Show that the radius of the circular base of light cone r =`d/sqrt(mu^2-1)`

Define critical angle. A luminous object is placed at a depth h in a medium of refractive index mu . Show that the radius r of the circular base of the one through which light can emerge is r = h // sqrt(mu^(2) - 1)

Monochromatic rays of light coming from vacuum are refracted in a medium of refractive index mu . Show that the ratio of the wavelength of the incident ray that of the refracted ray is equal to the refractive index of the medium.

A monochromatic ray of light is refracted from vacuum to a medium of refractive index mu . Determine the relation of the wavelengths of light in vacuum and in medium.

The angle of minimum deviation is the same as the angle of a glass prism of refractive index mu = sqrt3. What is the angle of the prism?

What is the time taken by light to travel through a glass slab of thickness ‘d’ and refractive index mu ?

What will be the velocity and wavelength of a light in a medium, of refractive index 1.5 if the wavelength of that is 6000 overset(0)A in air medium?

A ray of light passing through the medium of refractive index mu_(1) is incident on the surface of separation of another medium of refractive index mu_(2) . A part of the ray is reflected and another part is refracted. What should be the angle of incident so that reflected ray and the refracted ray are at right angles to each other?

What is the relation between polarising angle i_(p) and refractive index mu of the medium?

A luminous point source is placed at a depth of 30 cm in a source containing a liquid of refractive index 1.25. From the source light rays are being emitted in all directions. The rays which are refracted from the upper surface of the liquid form a circle. Calculate the radius of the circle.