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Noise Pollution and Acoustics
Noise is unwanted sound; acoustics studies and manages sound.
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Noise Pollution and Acoustics
Recommended for Class 10
Noise Pollution and Acoustics
Noise pollution is unwanted or excessive sound that can disturb people, communication, work, sleep, or health.
Common sources include:
traffic; machinery; construction; aircraft; * loud music.
Effects
Excessive noise can contribute to:
hearing damage; stress; reduced concentration; sleep disturbance.
Noise Control
Noise can be reduced by controlling:
source — quieter machines;
path — barriers or sound-absorbing materials;
receiver — hearing protection.
Acoustics
Acoustics is the study of sound and its behaviour.
In buildings, acoustics involves managing:
reflection; absorption; reverberation; clarity.
Reverberation
Reverberation is the persistence of sound caused by multiple reflections after the source has stopped.
Too much reverberation can reduce speech clarity.
Noise Pollution and Acoustics — Advanced
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Practice
PQ
Q1. Define noise pollution.
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Q2. Give sources of noise pollution.
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Q3. State effects of excessive noise.
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Q4. Explain three-control strategy for noise.
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Q5. Define reverberation.
Exam Practice
EQ
Q1. Explain noise control.
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Q2. Explain acoustics.
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Q3. Explain reverberation.
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Q4. Explain effects of excessive noise.
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Q5. Explain applications of acoustics in halls.
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.