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Two children are at the opposite ends of an iron pipe. One
strikes an end of the pipe with a stone. Which of the
following statements is correct?
1 Time taken by the sound waves in air and in iron to reach
the other end is same
2 Time taken by the sound waves in iron is more than that
taken in air to reach the other end
3 Time taken by the sound waves in air is more than that
taken in iron to reach the other end
4 The ration of these times depends on length of the pipe
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(3) Time taken by the sound waves in air is more than that
taken in iron to reach the other end
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