List of practice Questions

Give two practical applications of reflection of sound waves.

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? 
Given, g = 10 ms^–2 and speed of sound = 340 ms^–1.

A sound wave travels at a speed of 339 ms^–1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

What is reverberation? How can it be reduced?

What is loudness of sound? What factors does it depend on?

How is ultrasound used for cleaning?