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Q83 (NDA-II/2008) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Waves and acoustics Answer Verified

In a sitar wire which one of the following types of vibration is produced?

Result
Your answer: —  Â·  Correct: D
Explanation

In a sitar, the wire is fixed at both ends. When plucked, the string undergoes transverse vibrations where the particles move perpendicular to the direction of wave propagation [t4][t5]. Because the string is clamped at both ends, the waves traveling along the wire reflect back and forth, interfering with each other to form stationary (standing) waves [t5][t10]. These stationary waves are characterized by nodes (points of zero displacement) at the fixed ends and antinodes (points of maximum displacement) [t5]. While the sound waves produced in the surrounding air are longitudinal and progressive, the vibrations within the sitar wire itself are stationary and transverse [t8][t9]. This physical property allows the instrument to produce specific musical notes based on the fundamental frequency and harmonics of the standing wave patterns [t5].

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