Relation between speed of sound, frequency and wavelength is ………

Speed of sound in water at 20°C = ………

Speed of sound in air at 20°C is ………

Pitch of sound depends on ……

Loudness of sound depends on …………

Reflection of sound will be better on ……… surface than …… surface.

SONAR stands for …………

Region of low dense particles ………

Region of high dense particles is ………

Number of oscillations in one second is called ………

Maximum variation in the density is ……

Distance between two consecutive compressions is ………

Sound is produced by

The characteristic of sound which distinguishes between a shrill sound and a growling sound is

Which of the following is not a characteristic of musical sound ?