Physics question(optics)
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Physics question(optics)

[From: ] [author: ] [Date: 12-04-22] [Hit: ]
masteringphysics.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 )?sin i / 1 = 1 / 1.i = 49.......
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 )?

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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
1
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