The sound of train approaching could be heard earlier when we press our ears on rail tracks than just normally hearing it. What could be the possible reason for it?

Speed of sound is faster in solids than gases.

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Speed of sound is faster in liquids than solids.

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Speed of sound is faster in gas than solids.

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Speed of sound is maximum in vacuum.

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Solution

The correct option is A Speed of sound is faster in solids than gases.
The speed of sound is different in different mediums. The speed of sound is the maxium in solids. Sound of approaching train propagates faster within the train tracks than through the air.

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Similar questions

Why do sound travel faster in solids compared to liquids and gases

We can easily hear the sound of an approaching train by putting your ear on the track well before you could hear its sound in the air. Why?

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