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Imagine that you are listening to a popular song from a radio. Using volume control knob, you slightly increase the volume. The factor related to sound wave in this process is, increase in

Amplitude refers to the maximum displacement of a sound wave. It is the factor which determines the volume of the sound. On the other hand frequency refers to the number of cycles per unit time and it determines the pitch of the sound. Velocity and wavelength both determines the pitch of the sound.

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In an unoccupied hall of a courtly you will experience the echo effect of sound. If the same hall is furnished with almirahs, tables, chairs, and other commodities, you may not experience the echo clearly. It is because,

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Fill in the blanks with suitable words :

The product of frequency and wavelength of a sound wave is equal to its ___________ .