
alat optik
Authored by Inni Amarta
Physics
11th Grade
Used 19+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
penderita rabun dekat dapat ditolong dengan kaca mata ....
lensa cembung
lensa cekung
cermin cembung
cermin cekung
2.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Sebuah lensa berjarak fokus 10 cm digunakan sebagai lup. Mata normal menggunakan lup tersebut dengan akomodasi maksimum, maka perbesaran anguler lup adalah
2,5 kali
3 kali
3,5 kali
4 kali
5 kali
3.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Seorang penderita presbiopi memiliki titik dekat 50 cm, hendak membaca pada jarak baca normal, maka ia memerlukan kacamata berkekuatan ....
-2 dioptri
-1/2 dioptri
+1/2 dioptri
+2 dioptri
+4 dioptri
4.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Seorang penderita rabun jauh mempunyai titik jauh 40 cm. agar dapat melihat benda-benda di kejauhan secara normal, maka kekuatan lensa dan jenis lensa kacamata yang harus digunakan adalah ….
5.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Sebuah mikroskop mempunyai lensa obyektif yang menghasilkan perbesaran 100 kali. Mikroskop itu digunakan orang yang titik dekat matanya 25 cm. Agar memperoleh perbesaran maksimum 600 kali, maka jarak fokus okuler yang diperlukan ....
1,25 cm
4,00 cm
5,00 cm
6,00 cm
6,25 cm
6.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Seseorang dapat melihat dengan jelas benda-benda yang terletak paling dekat 40 cm dari matanya. Jika perbesaran maksimum lup yang diperoleh oleh orang itu adalah 6 kali, maka kekuatan lensa yang digunakan adalah ....
10,0 dioptri
12,5 dioptri
15,0 dioptri
20,0 dioptri
25,0 dioptri
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