Identify the part which vibrates to produce sound in the followinginstruments.
(a) Dholak (b) Sitar (c) Flute
(a) Dholakis a musical instrument. It consists of a stretched membrane calledits head. When the head is beaten gently, the stretched membrane setsinto vibration. Since sound is produced when an object vibrates, thedholakproduces a sound.
(b) Sitaris a musical instrument. It consists of stretched strings. When astring is plucked, it sets into vibration. Since sound is producedwhen an object vibrates, the sitarproduces a sound.
(c) Fluteis a hollow pipe. When air is blownover its mouth, the air inside the pipe is set into vibration. As aresult, a pleasant sound is produced.