Home
Class 12
PHYSICS
At what angle should a ray of light be i...

At what angle should a ray of light be incident on the face of a prism of refractive 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 .

Text Solution

Verified by Experts

The limiting value of the angle of incidence,
`i = sin^(-1) [sinA sqrt(mu^(2) - 1) - co sA]`
`= sin^(-1) [sin60^(@) (sqrt(1.524^(2) - 1)) - cos60^(@)]`
`= 29.73^(@) approx 30^(@)`
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    CHHAYA PUBLICATION|Exercise NCERT EXEMPLAR QUESTIONS WITH ANSWER HINT|2 Videos

  • REFRACTION OF LIGHT

    CHHAYA PUBLICATION|Exercise EXERCISE MULTIPLE CHOICE QUESTION|38 Videos

  • REFRACTION OF LIGHT

    CHHAYA PUBLICATION|Exercise SECTION RELATED QUESTION|18 Videos

  • REFLECTION OF LIGHT

    CHHAYA PUBLICATION|Exercise INTEGER ANSWER TYPE|3 Videos

  • SEMICONDUCTORS AND ELECTRONICS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|31 Videos

Similar Questions

Explore conceptually related problems

The relation between angle of the prism and refractive index of the medium is:

A light ray is incident on one refraction face of a prism, of refractive angle A, at an angle of incidence, I and emerges from the opposite face, normally. If refractive index of the material of the prism be mu what will be the value of the angle of incidence?

A ray of light is incident normally on a face of the prism of refracting angle 30^(@) and refractive index sqrt(2) . Calculate the angle of deviation in degree.

A ray of light is incident on the plane face of a liquid at an angle 45^(@) and due to refraction the ray is deviated through an angle 15^(@) . Calculate the refractive index of the liquid.

The refractive angle of prism is A. A ray is incident normally on one of the refracting faces of a prism and emerges out. If D be the deviation of the ray then refractive index of the material of the prism is—

A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. By rotating the prism,the angle of minimum deviation is measured to be 40^(@) . What is the refractive index of the material of the prism? If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light. Refracting angle of the prism is 60^(@) .

A ray of light incident on an equilateral glass prism propagates parallel to the base line of the prism inside it. Find the angle of incidence of this ray. Given refractive index of material of glass prism is sqrt(3) .