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 ?

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Q: 75 (CDS-I/2005)
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 ?

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,15,13,5,7,15,1

keywords: 

{'iron pipe': [0, 0, 1, 0], 'pipe': [0, 1, 2, 2], 'sound waves': [0, 0, 2, 9], 'iron': [0, 0, 1, 1], 'ratio': [1, 0, 1, 12], 'length': [0, 0, 1, 0], 'opposite ends': [0, 0, 2, 0], 'air': [1, 0, 0, 0], 'time': [2, 6, 15, 23], 'children': [0, 0, 1, 0], 'other end': [0, 0, 1, 0], 'times': [5, 2, 7, 3]}

In this scenario, we have two children at opposite ends of an iron pipe. One child strikes an end of the pipe with a stone, causing sound waves to travel through the pipe. We are asked to determine which statement is correct regarding the time it takes for the sound waves to reach the other end of the pipe.

Option 1 states that the time taken by the sound waves in air and in iron to reach the other end is the same. This statement is incorrect because the sound waves are traveling through the iron pipe, not just through the air.

Option 2 suggests that the time taken by the sound waves in iron is more than the time taken in air to reach the other end. However, this statement is also incorrect because the sound waves will actually travel faster through the solid medium of the iron pipe compared to the air.

Option 3 is the correct answer. It states that the time taken by the sound waves in air is more than the time taken in iron to reach the other end. This is because sound waves travel slower in air than they do in a solid medium like iron.

Option 4 is not relevant to this scenario as the question does not mention anything about the length of the pipe affecting the time taken by the sound waves.

Therefore, the correct answer