
vl 10
Authored by Lê Phương
Mathematics
KG
Used 2+ times

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21 questions
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1.
MULTIPLE CHOICE QUESTION
45 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
45 sec • 1 pt
Đơn vị của cường độ âm là?
W/m2
W/m
m2/W
dB
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
.
a
b
c
d
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
.
a
b
c
d
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
.
a
b
c
d
6.
MULTIPLE CHOICE QUESTION
45 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.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Âm có tần số nhỏ hơn 16 Hz là:
Hạ âm
siêu âm
Âm nghe đươhc
Nhạc âm
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