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Define amplitude. What is its symbol and its SI unit?
Define wavelength. What is its symbol and its SI unit?
Define frequency. What is its symbol and its SI unit?
What are longitudinal waves?
What is one hertz?
What is the reflection of sound? State the laws of reflection.
What do you understand by the terms "compression" and rarefaction?
What do you mean by an echo?
What is 'audible' sound?
What are transverse waves?