Silence zone takes place due to____________________?
Correct answer: B. destructive interference
- A. constructive interference
- B. destructive interference
- C. beats
- D. resonance
Explanation
A silence zone forms where two sound waves arrive with opposite phase and cancel one another, producing destructive interference and minimum amplitude. Constructive interference instead produces a region of increased loudness. The likely mistake is choosing beats, which produce alternating loud and soft sounds rather than a fixed cancellation zone.
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About Superposition and Interference
Superposition states that overlapping waves produce a resultant displacement equal to the algebraic sum of their individual displacements. Interference covers constructive and destructive interference, phase difference, path difference, coherent sources, and conditions for maxima and minima. It differs from diffraction, which involves spreading around openings or obstacles.
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