Question

What is the relation between RI and critical angle??


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Answer 1

Answer:

Refracted angle in total internal reflection = 90°

Incident angle = Critical angle

Refractive index of denser medium with respect to rarer medium = sin( Refracted angle)/sin(Incident angle)

Refractive index of denser medium with respect to rarer medium = sin 90°/ sin ( Critical angle)

Refractive index of denser medium with respect to rarer medium = 1 / sin (Critical angle)

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Explanation:

Answer 2

Answer:

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When the angle of refraction is equal to 90°, the angle of incidence is called the critical angle, At any angle of incidence greater than the critical angle, the light cannot pass through the surface - it is all reflected. Total because all of the energy is reflected.