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According to the law of refraction,
n
2
sin
θ
2
=
n
1
sin
1
. We take
n
1
= 1 and
n
2
= 1.33
(from Table 331). Then,
2
1
1
2
1
350
133
2555
=
F
H
G
I
K
J
=
°
F
H
G
I
K
J
=°
−−
sin
.
.
..
n
L
is given by
L
=
=
°=
A
22
150
072
tan
( .
.
m) tan25.55
m.
The length of the shadow is 0.35 m + 0.72 m = 1.07 m.
51. Consider a ray that grazes the top of the pole, as shown in the diagram that follows.
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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