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walker
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If anyone could provide some insight into how I might go about solving this problem it would be greatly appreciated.
Q: A ray enters the flat end of a long rectanglular block of glass that has refractive index n_2 as shown in the following figure. Show that all the entering rays can be totally internally reflected only if n_2 > 1.414
http://jzzyos.shackspace.com/diagram.JPG
Q: A ray enters the flat end of a long rectanglular block of glass that has refractive index n_2 as shown in the following figure. Show that all the entering rays can be totally internally reflected only if n_2 > 1.414
http://jzzyos.shackspace.com/diagram.JPG
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