
ALAT OPTIK (LENSA)
Authored by Tita Yunia
Science
8th Grade
Used 4+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Sebuah benda tingginya 2 cm terletak 15 cm dari sebuah lensa cembung. Bayangan nyata terbentuk pada jarak 10 cm dari lensa. Tentukan jarak titik api lensa!
3 cm
6 cm
8 cm
12 cm
2.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Berikut ini merupakan jenis- jenis alat optik kecuali
Mata
Lup
Kaca
Kamera
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
sebuah benda yang tingginya 12 cm diletakkan 10 cm didepan cermin cembung yang jari-jari kelengkungannya 30 cm. sifat-sifat bayangan yang dibentuk oleh cermin tersebut adalah ....
maya, tegak, diperkecil
maya, tegak, diperbesar
nyata, terbalik, diperkecil
nyata, tegak, diperbesar
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
sebuah benda terletak di depan lensa cembung yang jarak fokusnya 25 cm. kekuatan lensa tersebut adalah ....
0,05 dioptri
0,25 dioptri
0,04 dioptri
0,02 dioptri
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
perbandingan antara jarak bayangan dengan jarak bendanya disebut ....
pemantulan
perbesaran bayangan
kekuatan lensa
pembiasan
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Sebuah benda diletakkan tegak lurus pada sumbu utama cermin cekung yang jarak fokusnya 4 cm. Jika jarak benda terjadap cermin 8 cm, maka jarak bayangannya adalah....
8 cm
10 cm
12 cm
15 cm
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Perbesaran bayangan yang terjadi pada benda yang terletak 30 cm didepan lensa cembung dan memiliki jarak fokus 10 cm adalah ....
0,5 kali
1 kali
2 kali
3 kali
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