Q7. Identify the part which vibrates to produce sound in the following instruments.
(a) Dholak (b) Sitar (c) Flute
(a) The stretched membrane over the body of the dholak vibrates to produce sound.
(b) The strings stretched over the body of the sitar vibrate to produce sound.
(c) The air inside the flute vibrates when air is blown into it to produce sound.