. The refractive index of air with respect to glass is expressed as gμa = sin i / sin r


The refractive index of air with respect to glass is expressed as gμa = sin i / sin r

(a)Write down a similar expression for aμin terms of angle i and r.

(b)If angle r = 900, what is the corresponding angle i called?

(c)What is the physical significance of the angle i and part (b)?

Best Answer

(a) aμg = sin r / sin i

(b) The corresponding angle of incidence i will be equal to critical angle, if refractive angel, r = 900

(c) Total internal reflection occurs, if the angle of incidence exceeds the value of i obtained in part (b)

 

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