
UH CAHAYA DAN OPTIK
Authored by NUR RAHMAWATI
Science
8th Grade
Used 3+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Dua buah cermin datar disusun membentuk sudut tertentu, sehingga terbentuk sejumlah bayangan. Jika sudut cermin tersebut diperkecil 15, jumlah bayangan yang terbentuk menjadi… . (buah)
4
5
6
7
2.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Seorang siswa yang tingginya 1,5 meter berdiri di depan sebuah cermin datar vertikal. Agar siswa tersebut dapat melihat bayangan seluruh tubuhnya, maka tinggi minimum cermin tersebut harus sama dengan… . (cm)
75
60
150
300
3.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Perhatikan gambar cermin disamping!
Dari gambar tersebut menunjukan sifat cermin adalah… .
Konvergen
Divergen
Menyebarkan sinar
Membiasakan sinar
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Perbesaran bayangan yang terjadi adalah… . (kali)
0,5
1,0
1,5
2,0
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Sifat bayangan yang terbentuk adalah… .
Nyata, terbalik, diperkecil
Nyata, terbalik, diperbesar
Maya,tegak, diperkecil
Maya, tegak, diperbesar
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Sebuah lensa cembung memiliki panjang fokus 20 cm, besar kekuatan lensa adalah… . (dioptri)
1
2
4
5
7.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Cermin cekung mempunyai jarak bayangan terhadap lensa 60 cm. Jika perbesaran bayangan 4 kali lebih besar, maka jarak benda terhadap cermin… .
30 cm
20 cm
15 cm
10 cm
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