Identify the part which vibrates to produce sound in the following instruments. (a) Dholak (b) Sitar (c) Flute

Soln:

1. a) Dholak – It consists of a head which is a stretched membrane. Vibrations are set into these stretched strings. When the head is beaten gently, these vibrations produce sound, and thus Dholak produces sound.
2. b) Sitar – It is a musical instrument. Stretched strings are part of it. Vibrations are produced when the string is plucked when played. These vibrations produce sound, and thus sitar produces sound.
3. c) Flute – It’s an instrument which has holes in it. It is a hollow pipe. The air inside the pipe is set into vibration when air is blown over its mouth, and this produces a pleasant sound.