Pembiasan pada Prisma Pembiasan Cahaya

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 6.11 126 Mudah dan Aktif Belajar Fisika untuk Kelas X

8. Lensa

3A3:62793:=?538926B:B2023?A356=?5 =?5.B72?0B26;353:2;355B9:3 A77:38B50E9275B93057057BA;:A:A 33?A79;3?A3?==5;79?=9=?=E39A=?291;A3;B:A A3?30BA5A3A75203?5B2:;93672B:369?37AB ;3;6;774A74A3;072:35A3A75 32:60320375E5270A7=:362B3?;B9:359B5 3?;B9;3:359B5A3?30BA;3?B90573?;B90=:3 E523;7972730BA:343?73?;B9:343?72A03?B932B E13;0B5932BE139B5AB50B513;0B52139B5 343?7A3?27?7A2B837E7AB:313;0B52:3139B5 313;0B59=C39AB:39=C3?532:6:3E5057 A356E:3076A30:2?72057A37E37703?74A;35B;B: 903?97?-1 2B:3139B59=94AB:3 27C3?532:6:3E5057A356E:3076A772?72057 A37E37703?74A;3E30?903?97?-1 303:B;:30768B6;3;6;743=;343=;3E5A3?8272 :326?B;353A6B7057057:32350792 :3A3?2ABA=A79A7A794=9B2BA93:359B5:3 -1 ;3;3?:76A993;30B6:32057057E

a. Pembiasan Cahaya pada Lensa Cembung

6EE58AB623?;B9:313;0B59;35:;7 3;073?903?97?2A59270793675503?9 03?97?07E;35B;B:3?6A79-1 57:3E5A30:9;356;0A16E:30760E92?7 2057:3E5A77:369?313A?;0A16E272:; :3:30769317:2?7227B2?03?903?97?079;35B;B: AB:6300E:313;0B503?74A9=C3?53 .12.123-50,.2-4. E5032=:36:313;0B52A2703AB92351? ;355;0?97?7?7A7;3DE7?7?7A7;3D2:3 13;0B52A750B6E7AB305703?79BA 7?E52A5388?B;0BBA;27079;3::B7A7A794=9B 9A74 :3 0 7?E52A5E5;3::B7A7A794=9B74 27079388? B;0BBA; 1 7?E52A5;3::B7BA=A79A729;35:;73;07 Gambar 6.30 Lensa cembung bersifat konvergen mengumpulkan cahaya Gambar 6.31 Lensa cekung bersifat divergen menyebarkan cahaya Gambar 6.32 Bagian-bagian lensa cembung dan lensa cekung 33ABB2BA23C77;77;B;;355B93?; = K K I = K II Keterangan: O = pusat optik OF 1 = jarak fokus dari pusat optik OP 1 = jari-jari kelengkungan lensa F 1 dan F 2 = titik fokus P 1 dan P 2 = pusat kelengkungan lensa Gambar 6.33 Sinar-sinar istimewa pada lensa cembung F 1 F 1 F 1 F 2 F 2 F 2 a b c F 2 F 1 P 2 P O F 2 F 1 P P 1 O