A body vibrating with a time-period of s produces a sound wave which travels in air with a velocity of 350 m/s. Calculate the wavelength.

How could you convince a small child that when you speak, it is not necessary for air to travel from your mouth to the ear of a listener?

Define the terms ‘frequency’, ‘wavelength’ and ‘velocity’ of a sound wave. What is the relation between them?

What are longitudinal waves and transverse waves? Explain with the help of labelled diagrams.

Give two examples each of longitudinal waves and transverse waves.