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A ray of light impinges from air onto a block of ice (n = 1.309) at...

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Physics

A ray of light impinges from air onto a block of ice (n= 1.309) at a 33.0

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4.4 Ratings (865 Votes)

According to Snell'slaw         refractiveindex   n   =   sin?1 / sin ?2

   forice   n   =   1.309

   =>   sin 330 /sin ?2,ice   =   1.309

   sin ?2,ice   =   0.416

   ?2,ice   =   sin-1(0.416)

               = 24.590

   Similarily         sin330 / sin?2,water=   1.333

   sin?2,water   =  0.409

   ?2,water   =   sin-1(0.409)

               = 24.120

   ?2,ice   -   ?2,water   = 24.59 - 24.12

                              =   0.470
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