Page 148 - MUDAH DAN AKTIF BELAJAR FISIKA SMA KELAS X

objektif okuler
(+) (–)
L
s'
s = ~ ob s
ob ok
mata

pengamat
s' = – ~
ok
Gambar 6.50
Pembentukan bayangan oleh
teleskop bintang pada mata yang
berakomodasi maksimum.
(/<8/<5 A3:3@9=> 07<A/<5 879/ ;/A/ 03?/9=;=2/@7 /2/:/6

K
=0 =9
/< >/<8/<5 A3:3@9=> 07<A/<5 >/2/ @//A A72/9 03?/9=;=2/@7 /2/:/6
=9 K
=0
#3A3?/<5/<
>/<8/<5 A3?=>=<5
=9 8/?/9 03<2/ 0/57 :3<@/ =9B:3?
=0 8/?/9 0/E/<5/< 0/57 :3<@/ =0839A74
=0 8/?/9 4=9B@ :3<@/ =0839A74
=9 8/?/9 4=9B@ :3<@/ =9B:3?
(3?03@/?/< /<5B:3? A3:3@9=> 07<A/<5 /2/:/6
A/<

a
A/<
/A/B

=0 K
/<5B:3?
=9
#3A3?/<5/<
>3?03@/?/< /<5B:3?
/<5B:3?

Contoh 6.22
(/2/ @//A 53?6/</ %/A/6/?7 @3=?/<5 >3<3:7A7 53?6/</ ;3<5/;/A7<E/ 23<5/< @30B/6
A3:3@9=> 07<A/<5 $3<@/ =0839A74 2/< =9B:3? E/<5 275B</9/< ;3;7:797 8/?/9 4=9B@
;/@7<5 ;/@7<5 1; 2/< 1; "79/ @B2BA 27/;3A3? %/A/6/?7 27:76/A 23<5/< ;/A/
A3:/<8/<5 I 03?/>/ 23?/8/A @B2BA 27/;3A3? %/A/6/?7 >/2/ @//A 27/;/A7 ;3<55B</9/<
A3:3@9=> 07<A/<5 A3?@30BA
!5!"
793A/6B7
=0 1;
=9 1;
I
J (/2/ :3<@/ =0839A74
%/A/6/?7 03?/2/ >/2/ A7A79 E/<5 8/B6 @39/:7 @367<55/ /970/A<E/
=0
1;
=0
=0
J (/2/ :3<@/ =9B:3?
,<AB9 ;3<5/;/A7 03<2/ :/<57A 07/@/<E/ ;/A/ A72/9 03?/9=;=2/@7 /E/<5/<
=:36 :3<@/ =9B:3? 6/?B@ 8/AB6 27 A7A79 A/9 67<55/ "79/ 0/E/<5/< A3?:3A/9
=9
27 A/9 67<55/ 2/>/A 27>/@A79/< 03<2/ 03?/2/ 27 4=9B@
1;
=9 =9

Cahaya dan Optika 139