
Lý bài 10
Authored by nguyen tu
Other
12th Grade
Used 1+ times

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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đơn vị của mức cường độ âm là?
Đề-xi-ben (dB)
Jun (J
Henry (H)
Fara (F
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đơn vị của cường độ âm là?
W/m2
W/m
m2/W
dB
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cường độ âm được tính theo công thức?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức tính mức cường độ âm là
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Âm nghe được được có tần số
Nhỏ hơn 16 Hz
Lớn hơn 20 kHz.
Từ 16 Hz đến 20 kHz.
Lớn hơn 20000 Hz.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Âm có tần số nhỏ hơn 16 Hz là:
Hạ âm.
Siêu âm.
Âm nghe được
Nhạc âm.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tốc độ truyền âm trong môi trường nào là lớn nhất?
Rắn.
Lỏng.
Khí
Chân không
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