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Mechanical Properties of Fluids
Question
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Will a vibrating source always produce sound?

Answer

Vibrating source produces sound only if its frequency of vibration lies in audio region i.e. 20Hz to 20,000Hz. 

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Some More Questions From Mechanical Properties of Fluids Chapter

How sound is produced?

Can sound travel in vacuum?

Can two persons hear each other on the moon? Explain.

Can electromagnetic wave propagate in vacuum?

Can we listen in vacuum?

Which of the two moves forward during wave motion - particle or disturbance?

What type of wave is sound wave when it travels in air?

What type of wave is sound wave when it travels in solids?

Which of the two - sound or light is longitudinal in nature?

In what form the sound travels in air?