1. l1=40 l2=60 . a .
:
,
.
(1)
:
(2)
(2) (1),
(3)
(3) : a1=10 , a2=30 .
, .
(1) .
: a1=10 , a2=30 .
2. . 0,1 /. , 1 2, , t = 1 . T<< t.
:
:
, 
. , , p
p = EH.
E H , , p
p = Em 
, S, , ,
,
:
Em = Hm 
(*)
, t,
W = 
T<< t, 
;
W = 
,
W = 
(0,1 /)2 
1 2 1 = 1,88
: W = 1,88 .
3. R1 = R2 = 20 . : ) ; ) , (n = 1,7). n = 1,5.
:
(a), , , R1 = R2 = R
(),
: F1 = 0,2 ; F2 = - 0,85
4. , . . Δ τ2,20 = 4,8
.
:
:
τR = 
,
𝑘 ;
λ ;
R .
|
|
|
(1) Δ τ2,20 = 
- 
= 
(
)
(2) Δ τ9,16 = 
- 
= (
) =
(1)
= 
, (2)
Δ τ9,16 = = 
= 1,57 
10 3
: Δ τ9,16 = 1,57 10 3 = 1,57
5. . λ1 = 550 , λ2 = 600 30˚.
:
dsinφ1 = 4 λ1 (1)
dsinφ2 = 3 λ2 (2)
(1) (2)
= 
=
sinφ1 = 
= 
= 0,61
φ1 = arcsin 0,61 = 37˚42΄
: φ1 = 37˚42΄
6. (i) (nc = 1,57), (n = 1,33). .
:
tg i = 
n1 = n; n2 = n
tg i = 
= 1,18, , i = arctg 1,18 ≈ 50˚
n = 
, , n, : V = 
= 
= 2,26 108 
: i ≈ 50˚; V = 2,26 108
7.
T = 700˚C. d = 5 , .
:
() R = σ T 4. , N = R S, S .
S = τ 2 = (
) 2 = 
,
N = R S = σ T 4 * = 
= 9,97 101 = 99,7
: N = 99,7
8. λ = 6,2 10 5 . λ = 330 .
:
, , . , . = 
U = . .
hν = A + => E = hν - A
, A = h 
ν = h 
U = h 
- h = h C 
)
U = 
- 
U = 
= 1,76
: U = 1,76
