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Show that lateral shift is equal to the thickness of the slab for grazing incidence. |
Answer» Solution : `i=90^(@)` `r=C=` critical angle `THEREFORE "Lateral shift"=(t SIN(90^(@)-C))/(cosC)` `L.S=(t cosC)/(cosC): L.S=t` `therefore` For GRAZING incidence, there will be grazing emergence. So L.S = t. |
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