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">45;B 291B H1>7 C9>779 1;1> =5>71;921C;1> BD4DC ;A9C9B ;539< B589>771
                                             B9>1A 41C1>7 45>71> BD4DC 41C1>7 H1>7 C941; C5A<1<D 25B1A 1;1> =5>71<1=9
                                             @5=1>CD<1> B5=@DA>1
                                                  1791> <D1A H1>7 =5AD@1;1> @5=2D>7;DB  C5A2D1C 41A9 @<1BC9; 1C1D
                                             =1C5A91< <19> H1>7 25A6D>7B9 =5<9>4D>79 21791> 9>C9  (<58 ;1A5>1 3181H1
                                             1C1D 75<?=21>7 5<5;CA?=17>5C9; H1>7 =1BD; ;5 41<1= B5A1C ?@C9; =5
                                             >71<1=9 @5=1>CD<1> B5=@DA>1  @141 B11C ;5<D1A 41A9 B5A1C ?@C9;  5>5A79
                                             3181H1 C941; 21>H1; H1>7 89<1>7   5A41B1A;1> 81< 9CD :9;1 H1>7 49;9A9=
                                             141<18 B9>H1< B9>H1< ;?=D>9;1B9 41<1= 25>CD; 75<?=21>7 3181H1  @141
                   (a)           (b)
                                             B11C 49C5A9=1 49 C5=@1C CD:D1> B9>H1< C5AB52DC B1=@19 B531A1 DCD8 C1>@1
                                Gambar 6.24  21>H1; ;589<1>71> 5>5A79   5A41B1A;1> @141 @A?B5B C5A:149>H1 @5=1>
                        (a) Pemantulan sempurna  CD<1> B5=@DA>1  41@1C 49C5>CD;1> @D<1 25B1A>H1 BD4DC ;A9C9B D>CD; 4D1
                               pada serat optik.
                                (b) serat optik.  =549D= C5AC5>CD B521719 25A9;DC
                                                 )141 B11C C5A:149 @5=1>CD<1> B5=@DA>1  25A<1;D @5AB1=11> 25A9;DC
                                                        B9> &     +     45>71> +    +  41> .     J B589>771
                                                        B9> .  +
                                                                 B9> &  (    +      1C1D  B9> &   +
                                                                 B9>  5  +           (  +                 L

                                             $5C5A1>71>
                                             &    BD4DC ;A9C9B
                                             ;
                                             Contoh 6.8

                                             !9CD>7 BD4DC ;A9C9B 25A<91> H1>7 =5=9<9;9 9>45;B 291B =DC<1;       @141 B11C 49<5C1;;1>
                                             49 D41A1
                                              $9$%
                                              9;5C18D9
                                             +       +

                                                    +
                                             B9>&   +
                                                 (
                                             &       J
                                              ;
                                             #149  BD4DC ;A9C9B 25A<91> 141<18     J


                                             5   Pembiasan pada Kaca Plan Paralel
                                                 $131 @<1> @1A1<5< 141<18 B5;5@9>7 ;131 H1>7 ;54D1 B9B9 @1>:1>7>H1
                                             492D1C B5:1:1A   $131  @<1>  @1A1<5<  41@1C  497D>1;1>  D>CD;  =5>71=1C9
                                             :1<1>>H1 B9>1A H1>7 =5>71<1=9 @5=291B1> 41> D>CD; =5>5>CD;1> 9>45;B
                                Gambar 6.25
                       Seberkas cahaya memasuki  291B ;131 C5AB52DC
                              kaca plan paralel  ,9>1A  41C1>7  41A9  D41A1  =5<5F1<9  ;131  B5C521<  !  3=   ;5=D491>
                                             =5>D:D =549D= D41A1 ;5=21<9  )141 @A?B5B C5AB52DC  B5@5AC9 C1=@1; @141
                         i
                          1                   $0%$4      41>  $0%$4       59>1A =5>71<1=9 @5A75B5A1> 41A9 1A18
                            O
                                             B9>1A B5=D<1   5B1A>H1 @5A75B5A1> B9>1A C5AB52DC 41@1C 4989CD>7 B521719 25A9;DC
                   d        r     A              )5A81C9;1>   (
                            1   t                                                       0
                                                                     B9>      &6 .
                                B
                           D                                                     (     (
                                r
                                 2
                                                                                     t
                                Gambar 6.26                                     (                         L
                           Pergeseran arah sinar                                      sin i    r 1    1
                           pada kaca plan paralel


                 122    Mudah dan Aktif Belajar Fisika untuk Kelas X
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