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Subjects
Science CBSE
Class 9
Sound
Production, propagation and types of sound
11.
Range of sound waves
Exercise condition:
3
m.
Pick the right answer
:
Answer variants:
Infrasonic sound
Ultrasonic sound
wave
Audible sound
1
.
\(20\)
\(Hz\) \(-\)
2
.
\(25000\)
\(Hz\) \(-\)
3
.
\(5\)
\(Hz\) \(-\)
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