SELECT * FROM question_mgmt as q WHERE id=6542 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=376 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Sound identify the part which vibrates to produce sound

Question:

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

Answer:

  1. Dholak: In Dholak, when stretched membrane vibrates, then it produces sound. The stretched membrane is beaten up for vibrations, then it produces sound.
  2. Sitar: In Sitar, vibrations are produced by the stretched string. When the strings are pulled or we can say pushed, then production of vibrations occurs and then it produces pleasant sound.
  3. Flute: In Flute, vibrations are produced by the air columns. In this, a number of holes are present, through them air produces sound. It produced a pleasant sound.


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