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Subjects
Science State Board
Class 9
Sound
Types, properties and applications of sound
5.
Range of sound waves
Exercise condition:
3
m.
Pick the right answer
:
Answer variants:
Audible sound
Glass
Ultrasonic sound
Infrasonic sound
1
.
\(1\)
\(Hz\) \(-\)
2
.
\(56\)
\(Hz\) \(-\)
3
.
\(21333\)
\(Hz\) \(-\)
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