If one puts ears to the steel rail, the sound of a coming train can be heard even when the train cannot be seen. One can conclude from this observation that
1. Sound travels faster in steel than in air.
2. Amplitude of sound in the rail is much larger than in air.
3. Sound can travel larger distances in solids than in air

1 and 3

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1 and 2

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2 and 3

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3 and 3

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Solution

The correct option is C 1 and 3
1. We know sound travels faster in solid than vacuum this is because molecules in a solid are much close together and we know that sound needs a medium to propagate so sound travels larger distance and faster speed in steel than air.

So, the answer will be (A).

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Similar questions

Q. Why sound of a train can be heard by putting your ear on the track well before you could hear its sound in the air?

When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?

(a) When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why ?

(b) How could you convince a small child that when you speak, it is not necessary for air to travel from your mouth to the ear of a listener ?

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Q. Explain, the reason sound propagates faster through metals even though they are denser than gases is that they are stiffer ( i.e., less incompressible). for example: steel is 6000 times denser than air but 2000000 times more elastic than yeah, so sound travel 16 times faster in steel then in air.

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The correct option is C 1 and 31. We know sound travels faster in solid than vacuum this is because molecules in a solid are much close together and we know that sound needs a medium to propagate so sound travels larger distance and faster speed in steel than air. So, the answer will be (A).

The correct option is C 1 and 3
1. We know sound travels faster in solid than vacuum this is because molecules in a solid are much close together and we know that sound needs a medium to propagate so sound travels larger distance and faster speed in steel than air.

So, the answer will be (A).