123
Cahaya dan Optika
1
cos d
r
L 5A41B1A;1
495A?58 3?B
.
5A41B1A;14501
;414501
;495A?58 3?B
B9 .
6 . B58977125B1A5A75B5A1B91A
B9 L
3?B .
.
L 5C5A171
BD4DC41C17 C521;13111A15
. BD4DC291B
025B1A5A75B5A1B91A
,525A;1BB91A1B5A:1CD81415A=D;11;13111A15411C=5=25CD;BD4DC 41C17B525B1AJ 9;1C521;13111A153=41BD4DC291B
JC5CD;125B1A
5A75B5A1H174911=9?58B91A1B5AC5AB52DC 9
9;5C18D9 J.
J3=
B9 L
3?B .
. B9 J L
J
3?B
J
149;5C9;1=55F1C9;13111A15B91A1B5A=5711=95A75B5A13=41A9 1A18B5=D1
Contoh
6.9
6. Pembiasan pada Prisma
A9B=1=5AD1;12541H17C5A2D1C41A9751BC5=2DB3181H1CA1B 1A1H17;54D1B9B9H14921C1B9294175A=D;1H17A5=25CD;BD4DC
C5AC5CD B1CD B1=1 19 ,D4DC C5AB52DC 491=1;1 BD4DC 5=291B B9=2? 94175A=D;11A9B=125A6D7B9B521719294175=291B
5A81C9;1:11H1B91AH17=55F1C9B52D18A9B=114104 181H141C1741A9D41A1=5D:D294175A=D;11A9B=11;1
49291B;1=545;1C971A9B?A=1 5=D491;5C9;13181H1=59771;1 A9B=1=5D:DD41A13181H1C5AB52DC1;149291B;1=5:1D8971A9B?A=1
,5C518=55F1C9A9B=13181H1=5711=945E91B9 5B1AH1BD4DC45E91B9 H174911=93181H114118B52171925A9;DC 5A81C9;104
5A81C9;1 . 6
41
6 .
J 6 6
5A81C9;1
J .
1
J .
2
Gambar 6.27
Prisma segitiga
Gambar 6.28
Jalannya sinar pada prisma N
N sinar
datang sinar
bias
Di unduh dari : Bukupaket.com
124
Mudah dan Aktif Belajar Fisika untuk Kelas X
J 6 6
J J J
6 6 . 6
6
1 2
r i
L ,D4DC45E91B9H1
J J J
6 6
6 6 L
. .
. L.
1 2
i r
L 5C5A171
BD4DC5=291BA9B=1 .
BD4DC291B41A9B91A=1BD; BD4DC41C17B91A=1BD; .
BD4DC291B41A9B91A;5D1A BD4DC41C17B91A;5D1A
BD4DC45E91B9
,52D18A9B=1C5A2D1C41A9;131+=5=99;9BD4DC5=291BJ 9;1B525A;1B B91A1B5A:1CD8141B118B1CD5A=D;115=291BH14571BD4DC41C17J
25A11;18BD4DC45E91B9H174911=9?58B91A1B5AC5AB52DCB5C518=55F1C9A9B=1 9
9;5C18D9 J
+ =549D=;131
+ =549D=D41A1
J ,D4DC45E91B94989CD74571=577D1;15AB1=11
1 2
i r
58;1A51 41 C51849;5C18D9919.
BD4DC291B;54D15AD4931A9C5A5298 418DD 1415A=D;115=291B5AC1=125A1;D5AB1=11,59DB25A9;DC
Contoh
6.10
Gambar 6.29
Penurunan rumus sudut deviasi prisma
7. Deviasi Minimum
,5C91B91AH1741C17141A9B=11;1=5711=945E91B9H17 =5781B9;1BD4DC45E91B9C5AC5CD ,118B1CDB91A41C17C5AC5CD
1BC91;1=5781B9;1919BD4DC45E91B9=99=D= 11;?49B9;8DBDB B9
B9 +
. +
4571+ +
D41A1
41+
;131
B9 B9
B9 .
.
. 919
49C5CD;1B52171925A9;DC
2 1
1
i r
r
2
60 19, 47
40, 53 i
5=D491919. 49C5CD;1B52171925A9;DC
B9 B9
B9 B9 J
+ .
. .
+ B9
1A3B9 J
. .
.
149BD4DC45E91B9H174911=93181H1;5C9;1=55F1C9A9B=1;131C5AB52DCB525B1A .
6 JJLJJ
P S
T Q
r
1
r
2
i
2
i
1
R B
Di unduh dari : Bukupaket.com
125
Cahaya dan Optika
77A3?8273?2?967:3;0B9A7 2AA3?827 2AB2BA2A53?A;;235B2BA07932B
3?EB2BA23C77;77;B;30B6?7;2A271?7305703?79BA :369?3
;9 36755
K 7:7
27;B99 93 2:; 12-. 7 36755 23C77?7;;3827
K 3?2?9 B9B;3::7B
7 7
K 12-.7212-.727B0A7AB79932:;
12-.736755273?=:36 7
7 7
7 79 9317: 7
36755
K K
K
K K
30B6?7;E5A3?0BA2?791E5;3;7:797B2BA3;07
I 27:3A992:;;327B;7?79303?97?2A52?77?
;3;B97
?7;03?96B2BA23C77;77;B;?7;A3?30BA 5
793A6B7 I
;327B;7? ;327B;91
K 3A3?5
B2BA23C77;77;B;
1,2
n B2BA07?3:A74;327B;A3?62;327B;
B2BA23C77?7;
Contoh
6.11
Di unduh dari : Bukupaket.com
126
Mudah dan Aktif Belajar Fisika untuk Kelas X
8. Lensa