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प्रश्न
If ______ of sound is decreased, its loudness also decreases.
उत्तर
If amplitude of sound is decreased, its loudness also decreases.
संबंधित प्रश्न
An enemy plane is at a distance of 300 km from a radar. In how much time the radar will be able to detect the plane? Take velocity of radio waves as 3 x 108 ms-1
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