
POSTEST GELOMBANG BUNYI (Intensitas & Taraf Intensitas)
Quiz
•
Physics
•
11th Grade
•
Medium
Helastrin Hutagaol
Used 4+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Syarat agar bunyi dapat terdengar manusia adalah...
Ada sumber bunyi, zat antara dan frekuensi bunyi 20 Hz-20 kHz
Ada zat antara dan frekuensi bunyi lebih dari 20 kHz
Adanya sumber bunyi dan frekuensi bunyi lebih dari 20 kHz
Ada sumber bunyi dan frekuensi kurang dari 20 Hz
Ada zat antara dan frekuensi kurang dari 20 Hz
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
0,1 m
0,2 m
0,5 m
10 m
semua salah
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada jarak 4 meter dari sumber bunyi intensitasnya 60 dB. Pada jarak 40 meter taraf intensitasnya ....
40 dB
50 dB
60 dB
70 dB
90 dB
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika seratus mesin identik bekerja bersamaan, taraf intensitas bunyi di ruang pabrik itu 90 dB. Agar taraf intensitas bunyi di ruang pabrik itu menjadi 80 dB, jumlah mesin yang harus dimatikan adalah...
90
60
30
20
10
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Terdapat sumber suara yang memiliki taraf intensitas 50 dB. Intensitasnya adalah….
10-3 watt/m2
10-6 watt/m2
10-4 watt/m2
10-7 watt/m2
10-5 watt/m2
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Di bawah ini pernyataan yang benar adalah...
Gelombang bunyi dapat merambat dalam ruang hampa
Gelombang bunyi di sebabkan oleh benda yang bergetar
Gelombang bunyi di udara adalah gelombang transversal
Gelombang bunyi merambatkan partikel-partikel udara ke suatu tempat
Gelombang bunyi merupakan gelombang elektromagnetik
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Intensitas bunyi pada jarak 30 m dari pabrik adalah 60 dB. Taraf intensitas bunyi pabrik itu pada jarak 300 m adalah
40 dB
90 dB
120 dB
300 dB
600 dB
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