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प्रश्न
List four substances which are good absorbers of sound.
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उत्तर
When sound falls on sofa, fluffs and light substances such as clothes, papers, thermocol, coating of plaster of paris, carpets, curtains, furniture, wood etc., they absorb the sound to a good extent. These are called good absorbers of sound.
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संबंधित प्रश्न
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