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100.
(a) The condition (in Eq. 3444) required in the critical angle calculation is
θ
3
=90
◦
.T
h
u
s(
w
i
t
h
θ
2
=
θ
c
, which we don’t compute here),
n
1
sin
θ
1
=
n
2
sin
θ
2
=
n
3
sin
θ
3
leads to
θ
1
=
θ
= sin
−
1
n
3
/n
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics

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