The refractive index of air with respect to glass is expressed as (a) Write down a similar expression for a μ g in terms of the angles i and r. (b) If angle r = 90°, what is the corresponding angle i called? (c) What is the physical significance of the angle i in part (b)?

(a) The expression for a μ g = (b) When refractive angle r = 90° then, the corresponding angle of incidence i will be equal to critical angle. (c) The phenomenon of total internal reflection occurs when the angle of incidence exceeds the value of i obtained in part (b).

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Physics

The refractive index of air with respect to glass is expressed as (a) Write down a similar expression for <sub>a</sub>μ<sub>g</sub> in terms of the angles i and r. (b) If angle r = 90°, what is the corresponding angle i called? (c) What is the physical significance of the angle i in part (b)?

Refraction Plane Surfaces

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Physics

The refractive index of air with respect to glass is expressed as (a) Write down a similar expression for <sub>a</sub>μ<sub>g</sub> in terms of the angles i and r. (b) If angle r = 90°, what is the corresponding angle i called? (c) What is the physical significance of the angle i in part (b)?

Refraction Plane Surfaces

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