CAHAYA & ALAT OPTIK KELAS 8
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Medium
Lis Wanto
Used 102+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan pernyataan berikut ini!
1.Merambat lurus
2.Dapat dipantulkan dapat dibiaskan
3.Gelombang elektromagnetik
Pernyataan di atas merupakan sifat....
cahaya
bunyi
api
air
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pernyataan yang benar adalah...
Pemantulan baur, jika cahaya dipantulkan oleh bidang yang rata, seperti aspal, tembok dan kayu
Pemantulan baur, jika cahaya dipantulkan oleh bidang yang tidak rata, seperti cermin datar
Pemantulan teratur, jika cahaya dipantulkan oleh bidang yang rata, seperti aspal, tembok dan kayu
Pemantulan teratur, jika cahaya dipantulkan oleh bidang yang rata, seperti cermin datar
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sifat bayangan cermin datar, yaitu ....
nyata, tegak, sama besar, dan jarak benda sama dengan jarak bayangan
maya, terbalik, sama besar, dan jarak benda sama dengan jarak bayangan
maya, tegak, sama besar, dan jarak benda sama dengan jarak bayangan
maya, tegak, sama besar, dan jarak benda lebih dekat jarak bayangan
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah benda diletakkan 5 cm di depan cermin cekung. Jika jarak focus cermin tersebut 3 cm. Hitunglah
jarak bayangan yang dibentuk!
4,5 cm
5,5 cm
6,5 cm
7,5 cm
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah cermin cembung memilki jari-jari kelengkungan 40 cm. Jika benda diletakkan pada jarak 10 cm di depan cermin cembung, tentukan perbesaran bayangannya!
0,67 kali
0,57 kali
0,47 kali
0,37 kali
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Panjang fokus sebuah lensa cembung (lensa konvergen) 15 cm. Jika jarak benda dari lensa cembung adalah 5 cm, tentukan sifat bayangannya !
nyata, diperbesar, tegak dan bayangan ada di ruang III
nyata, diperkecil, tegak dan bayangan ada di ruang I
maya, diperbesar, tegak dan bayangan ada di ruang IV
maya, diperkecil, terbalik dan bayangan ada di ruang II
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Panjang fokus sebuah lensa cekung (lensa divergen) 30 cm. Jika jarak benda dari lensa cekung adalah 15 cm, tentukan perbesaran bayangannya !
1/2 kali
2/3 kali
3/4 kali
4/5 kali
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