Q28 of 123 Page 412

Find the maximum angle of refraction when a light ray is refracted from glass (μ = 1.50) to air.

Refractive index of glass is μ = 1.50


According to the definition of critical angle, if a refracted ray makes an angle more than , then total internal reflection will occur. So, the maximum angle of refraction is.


More from this chapter

All 123 →
26

An optical fibre (μ = 1.72) is surrounded by a glass coating (μ = 1.50). Find the critical angle for total internal reflection at the fibre-glass interface.

26.PNG


 27

A light ray is incident normally on the face AB of a right-angled prism ABC (μ = 1.50) as shown in figure (18-E9). What is the largest angle ϕ for which the light ray is totally reflected at the surface AC?


 29

Light is incident from glass (μ = 1.5) to air. Sketch the variation of the angle of deviation δ with the angle of incident i for 0<i<90°.

 30

Light is incident from glass (μ = 1.50) to water (μ = 1.33). Find the range of the angle of deviation for which there are two angles of incidence.