p34 044

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44.

(a) The law of refraction requires that sin θ

1

/ sin θ

2

= n

water

= const. We can check that this is indeed

valid for any given pair of θ

1

and θ

2

. For example sin 10

/ sin 8

= 1.3, and sin 20

/ sin 15

30



= 1.3,

etc.

(b) n

water

= 1.3, as shown in part (a).


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