Partie I - Exercice : Miroirs sphériques - banques

3
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C R
S
A A0I
H α α0γ i i0
A
b)
A"A H A’ α’
a)
i’
i
γ
C
αS
I
i i0
α α0γ
tan αtan α0tan γ HI

H
R
SA SA0SC
x=CA x0=CA0
2x x0=R(x+x0)
1/x 1/x0
M1M2C R1
R2=kR10< k < 1M1
M2M1
A00
F00
kM1

D
N n
TaPa(z)ρa(z)z
z'0
Tc◦
z'D
Tf◦
Ta
g
z
0
D
1 2
34
source
chaude
source
froide
descente elevation
Tf
Tc
D= 2
Mair = 29 −1
MHe = 4 −1
R= 8,31 −1.−1
g= 9,81 −2
P Cp= 3160 −1.−1

ρag
~
fΠ=−ma~g ma
P0z= 0
PaTaρa
Pa(z)
Pa(z) = P0e−z/H
H
H
V
~
fΠ=−ρaV ~g
(2) →(3)
g n Mair TfTc
WΠ
(P,T )
(P,V )
W1→2
n R TfTcD H
WP

Cpg D TfTcMair MHe
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