Solve question 12 12. What will be the minimum angle of incident such that the total internal reflection occurs on both the surfaces ? Share with your friends Share 1 Pintu B. answered this Dear Student , For the first surface , 2sini1=2 sin90°⇒i1=45°Critical angle for the first surface is 45°.For second surface ,2 sini2=3 sin90°⇒i2=60°So the critical angl efor the second surface is 60° .Therefore the minimum angl eof incidence =60° .Regards 0 View Full Answer
