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Answer the following: (i) A ray of light incident on face AB of an equilateral glass prism, shows minimum deviation of 30^(@) . Calculate the speed of the light through the prism. (ii) Find the angle of incidence at face AB so that the emergent ray grazes along the face AC.

(i) A ray of light incident on face AB of an equilateral glass prism, shows minimum deviation of 30^(@) . Calculate the speed of the light through the prism. (ii) Find the angle of incidence at face AB so that the emergent ray grazes along the face AC.

In the above example, find the angle of incidence at face AB , so that emergent ray grazes along the face AC' .

Light ray is incident on a prism of angle A=60^(@) are refractive index mu=sqrt(2) . The angle of incidence which the emergent rays grazes the surface is given

Light ray is incident on a prism of angle A=60^(@) are refractive index mu=sqrt(2) . The angle of incidence which the emergent rays grazes the surface is given

Light ray is incident on a prism of angle A=60^(@) and refractive index mu=sqrt(2) .the angle of incidence at which the emergent ray grazes the surface is given by

A ray of light falls on the side of a prism ABC whose refracting angle Is A. The angles of incklence and refraction at the first face AB is i_1 and r_1 while at the second face AC is i_2 and r_2 Find the angle of incidence in order that the emer gent ray may just graze the other side. Take A = 60

In an isosceles prism of prism angle 45^(@) , it is found that when the angle of incidence is same as the prism angle, the emergent ray grazes the emergent surface. Find the refractive index of the material of the prism.For what angle of incidence the angle of deviation will be minimum ?