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Refraction through flat glass. Light travelling in air strikes a flat piece of uniformly thick glass...

Refraction through flat glass. Light travelling in air strikes a flat piece of uniformly thick glass at an incident angle of 60.0°, as shown. If the index of refraction of the glass is 1.50, (a) what is the angle of refraction θA in the glass; (b) what is the angle θB at which the ray emerges from the glass?

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Answer #1

Given,

Refractive angle of glass,

Incident angle at glass,

Angle of refraction at A =

By Snell's law,

  

  

Again applying snell's law at the end of the glass plane,

  

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