The refrating angle of a prism is `40^@` and the refractive index of its material is given by
`mu=1.25 + b/(delta^2)`
When a ray of light is incident normally on the face AB of the prism,after refraction through the prism,the ray of light just grazes along the face AC as shown in Fig.3.20.
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Find the critical angle for the material of the prism.

The refrating angle of a prism is 40^@ and the refractive index of its material is given by mu=1.25 + b/(delta^2) When a ray of light is incident normally on the face AB of the prism,after refraction through the prism,the ray of light just grazes along the face AC as shown in Fig.3.20. If the wavelength of the incident light is 440 nm,find the value of b.

The refractig angle of a prism is A and the refractive index of its material is mu .When a ray of light is incident on the face AB of the prism,after refraction through the prism,the ray of light just grazes along the face AC as shown in Fig.3.21. Determine the value of the angle of incidence in terms of A and mu .

The refracting angle of a prism is A and the refractive index of its material is cot A//2 .For a ray of light incident on the prism,find the angle of minimum deviation in terms of A.

The refracting angle of a prism is 60^@ nd the refractive index of the material of the prism is 1.732.Calculate the angle of minimum deviation.

An equilateral prism of refractive index 1.45 is surrounded by water of refractive index 1.33 .A narrow beam of light is incident normally on one face of the prism.Find the direction of the emergent ray.

A ray of light is incident normally on one of the faces of a prism of apex angle 30^@ and refractive index sqrt2 .Find the angle of deviation for the ray of light.

A ray of light is incident at an angle of 60^@ on the first face of a prism of an angle 30^@ .The ray emergingn out of the prism makes an angle of 30^@ with the incident ray as shown in Fig.3.13. . calculate the refractive index of the material of the prism.

At what angle should a ray of light be incident on the face of a prism of refracting angle 60^@ so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.

The angle of a prism is 6^@ and its refractive index for green light is 1.5 .If a green ray passes through it,the deviation will be