Advertisements
Advertisements
Question
How is the critical angle of a material related to its refractive index?
Solution
Relation of critical angle and refractive index:
μ = `1/sin "C"`
Where μ = refractive index of the material and C = critical angle.
APPEARS IN
RELATED QUESTIONS
If a ray of light passes from medium I to medium II without any change of direction, what can be said about the refractive indices of these media (angle I is not 0)?
A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.
What can you say about the value of the angle of deviation in such a situation?
What is meant by the statement, ‘the critical angle for diamond is 24°’?
A ray of light is incident on a glass surface at an angle of 50° with the corresponding angle of refraction 30°. Find the value of the R.I. of glass.
Optical fibre communication uses the principle of ______.
The twinkling effect of star light is due to ______.
The angle of incidence at which the angle of refraction is Q£ is called the critical angle.
A green light is incident from the water to the air-water interface at the critical angle (θ). Select the correct statement.
- Assertion (A): Propagation of light through an optical fibre is due to total internal reflection taking place at the core-cladding interface.
- Reason (R): Refractive index of the material of the cladding of the optical fibre is greater than that of the core.
Name any two phenomena which take place in the formation of a rainbow.
