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11. Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines? A. Refracting B. Absorption C. Focusing D. Diffusion
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11. Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines? A. Refracting B. Absorption C. Focusing D. Diffusion

User Eknumbat
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The Answer is C. Focusing
User Adilbo
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