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Subjects
Science State Board
Class 9
Sound
Types, properties and applications of sound
7.
Riddles on sound waves
Exercise condition:
4
m.
Fill the blanks using the below options
:
Compression
Amplitude
Rarefaction
Ultrasound
Thrust
Gas
SONAR
Cochlea
ECG
1)
I convert sound wave into electrical impulses. Who am I?
2)
I may increase or decrease the loudness of the sound. Who am I?
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