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Chapter 10 Sounds Waves: Characteristics and Applications - Part 4

What is ultrasound?

Type: MCQ • Marks: 1
What is ultrasound?
Options
A. Sound above 20,000 Hz
B. Silence
C. Sound between 20 Hz and 20 kHz
D. Sound below 20 Hz
Explanation
Ultrasound has frequency above 20,000 Hz.
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Class 9th Science (MCQ)

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