Question 7 (a)
Identify the part which vibrates to produce sound in the following instruments.
(a) Dholak (b) Sitar (c) Flute
(a) Dholak is a musical instrument which consists of a membrane called the head. When the head is beaten gently, the stretched membrane sets into vibration. Since sound is produced when an object vibrates, the dholak produces a sound.
(b) Sitar is a musical instrument which consists of stretched strings. When a string is plucked it sets into vibration. Since sound is produced when an object vibrates, the sitar produces a sound
(c) The flute is a hollow pipe. When air is blown over its mouth, the air inside the pipe is set into vibration. As a result, a pleasant sound is produced.