vl 10

vl 10

KG

21 Qs

quiz-placeholder

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Assessment

Quiz

Mathematics

KG

Practice Problem

Medium

Created by

Lê Phương

Used 2+ times

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21 questions

Show all answers

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

Media Image

.

a

b

c

d

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

.

a

b

c

d

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

.

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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