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प्रश्न
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
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उत्तर
- In the past, individuals would place their ear to the rail to detect the arrival of a distant train, as they understood that sound travels more quickly through solids than through gases.
- Thus, putting their ear to the rails used to give them the idea of the arrival time of a train in advance.
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