Question

If the critical angle for a material in air is 30 degree then the refractive index of the material will be

Answer 1

Answer:

If the critical angle for a material in air is 30 degree then the refractive index of the material will be 2.

Explanation:

To answer the question at first we need to know what is critical angle and what is refractive index.

Critical Angle : Smallest possible angle of incidence for which a light ray is totally reflected at the interfaqce of two medium who have two different density.

Refractive Index : It is value which is calculated by the raio of spped of light in vaccum and speed of light in a medium which is greater denser than vaccum .

Relation between refractive index and critical angle is -------

μ = $\frac{1}{sin 30}$ = 2.

If the critical angle for a material in air is 30 degree then the refractive index of the material will be 2.

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