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प्रश्न
On placing your ear close to an iron railing which is tapped some distance away, sound is heard twice. Explain, why?
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उत्तर
The sound produced by the moving wheels of the train travels faster on the iron track than in the air. So, firstly sound produced because of railway track is heard and then heard in the air.
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संबंधित प्रश्न
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