1. . (). .
2. . ( ).
3. . . , ?
4. , . .
5. ( ). .
6. .
. , , . ? n =1,333, n = 1,5. (48)
:
n =1,333 :
n = 1,5 tg α = n2/n1 (1)
n1 = n =1,333,
____________ n2 = n = 1,5.
-? :
tg α = n/ n.
tg α = 1,5/1,333 = 1,125.
α = 48.
: α = 48.
15.
, . , . ? .
( )?
(). ().
.
6. .
. λ = 9,60 . , ( ). (29 )
:
λ = 9,610-6 :
____________ λ = b/,
-? b = 29·10-3 - .
= b/λ.
= 2,9·10-3/9,610-6 = 302 () = 29.
: = 29.
5.
1. .
2. .
3. . ( , , ), , , . () (-) .
4. .
. t = 10 . λ = 632 , J = 250 /2. 4 2?
:
t = 600 :
λ = 63210-9 J = W/st (1)
J = 250 /2 : W = Jst (2)
s = 410-6 2 :
____________ W = NE, (3)
N -? N − ,
E = hν = hc/λ − .
(3) (2) N:
N = Jstλ/hc (4)
N = (250410-660063210-9)/6,6310-343108 ≈ 1911016
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: N = 1911016.