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 ?

examrobotsa's picture

Submitted by examrobotsa on

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 ?
AnyChart Trial Version

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]}