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Question
What causes sound in air?
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Solution
The waves in the air causes sound . Through waves , energy get transferred from one place to another and hence the sound.
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RELATED QUESTIONS
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A medium is necessary for ______ of sound.
Match the pairs.
| Group ‘A’ | Group ‘B’ |
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| (b) Frequency | (2) Frequency more than 20000 Hz |
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| (d) Ultrasonic sound | (4) Measured in Hz |
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