A ray of light is incident in air on a block of a transparent solid whose index of refraction is n.
http://session.masteringphysics.com/prob…
If n = 1.31, what is the largest angle of incidence theta for which total internal reflection will occur at the vertical face (point A shown in the figure )?
http://session.masteringphysics.com/prob…
If n = 1.31, what is the largest angle of incidence theta for which total internal reflection will occur at the vertical face (point A shown in the figure )?
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Snell's Law
sin i / sin r = n_r / n_i
the angle beyond which you get total internal reflection is called critical angle
that angle can be found by setting sin i = 1 so that the refracted angle is 90
sin i / 1 = 1 / 1.31
i = 49.76 degrees
round appropriately
sin i / sin r = n_r / n_i
the angle beyond which you get total internal reflection is called critical angle
that angle can be found by setting sin i = 1 so that the refracted angle is 90
sin i / 1 = 1 / 1.31
i = 49.76 degrees
round appropriately