
Alat optik
Authored by R Purba
Science
8th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bayangan yang dibentuk oleh cermin datar selalu bersifat....
Nyata,tegak dan sama besar
maya,tegak dan sama besar
maya,tegak dan diperbesar
maya,terbalik dan diperkecil
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah benda diletakkan 20 cm di depan cermin cembung yang jarak fokusnya 30 cm.letak dan sifat bayangan yang dibentuk oleh cermin tersebut adalah...
60 cm didepan cermin
60 cm di belakang cermin
12 cm di belakang cermin
12 cm di depan cermin
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
letak bayangan yang dibentuk lensa biikonveks 20 cm di belakang lensa.Apabila kekuatan lensa 10 dioptri maka jarak benda terhadap lensa adalah....
5 cm
10 cm
15 cm
20 cm
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
sebuah lup mempunyai jarak fokus 5 cm,jika titik dekat mata normal 25 cm,maka perbesaran lup untuk mata berakomodasi maksimum adalah...
6 kali
5 kali
4 kali
3 kali
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
sebuah benda terletak di depan cermin cekung pada jarak 12 cm,dengan jarak fokus 10 cm.maka jarak bayangan yang terbentuk adalah....
50 cm
60 cm
80 cm
120 cm
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jarak benda terhadap lensa cembung 20 cm,bayangan maya yang terjadi 12 cm dari lensa,maka jarak titik fokusnya adalah...
30 cm
12 cm
7,5 cm
1,5 cm
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
sebuah lensa memiliki kekuatan 2 dioptri,maka jarak fokus lensa adaalah...
80 cm
50 cm
15 cm
10 cm
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