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Chapter 10 Sounds Waves: Characteristics and Applications - Part 4

What is infrasound?

Type: MCQ • Marks: 1
What is infrasound?
Options
A. Sound above 20,000 Hz
B. Sound heard by humans only
C. Sound in vacuum
D. Sound below 20 Hz
Explanation
Infrasound has frequency below the human audible range.
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Class 9th Science (MCQ)

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