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Factors Affecting Sound Speed

Two children ...

Question

Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.

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Solution

Let the length of the aluminium rod be d.

Speed of sound wave in aluminium at 25°C,

Therefore, time taken by the sound wave to reach the other end,

Speed of sound wave in air at 25°C,

Therefore, time taken by sound wave to reach the other end,

The ratio of time taken by the sound wave in air and aluminium:

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Similar questions

Q. Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.

Two children are at opposite ends of metal rod. One strikes the end of the rod with big pebble. Find the ratio of time taken by the sound waves in air and in the metal to reach the second child :

(Speed of sound in rod

= 6420 m s^{- 1}

Q. The children are at opposite ends of metal rod. One strikes the end of the rod with big pebble. Find the ratio of time taken by the sound waves in air and in the metal to reach it second child. (Speed in rod = 6420 m/s).

Q. Two children are at opposite ends of an iron pipe. One strikes his end of the iron pipe with a stone. Find the ratio of times taken by the sound wave in air and in iron to reach the other child. Given, velocity of sound in air is 344

m s^{- 1}

and that in iron is 5130

m s^{- 1} .

Q. Two children are at the opposite end of an iron pipe. One struks the end of the pipe with a stone. Calculate the ratio of the time taken by sound waves in air and in iron to reach the other child. Use speed of sound in (i) air

= 344 m s^{- 1}

= 5130 m s^{- 1}

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