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Due to which phenomena sound is heard at longer distances in nights than in day?
  • a)
    Reflection
  • b)
    Refraction
  • c)
    Interference of sound
  • d)
    Diffraction of sound
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Due to which phenomena sound is heard at longer distances in nights th...
Diffraction is the bending or spreading out of waves when they encounter an obstacle or pass through a narrow opening. Sound waves can diffract around objects or through small openings, and this phenomenon allows sound to reach areas that are not directly in the line of sight.
During the day, the atmosphere near the ground is usually warmer than the air above, creating a temperature inversion that causes sound to be refracted upwards. This refraction results in the sound being directed away from the ground and reduces the distance over which it can be heard.
At night, the temperature inversion weakens or disappears, and the sound waves can diffract more effectively. As a result, sound can travel longer distances at night than during the day.
Therefore, the correct answer is D. Diffraction of sound.
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Due to which phenomena sound is heard at longer distances in nights than in day?a)Reflectionb)Refractionc)Interference of soundd)Diffraction of soundCorrect answer is option 'D'. Can you explain this answer?
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