question_answer

A cylindrical tube, open at both ends, has a fundamental frequency, f, in air. The tube is dipped vertically in water so that half of it is in water. The fundamental frequency of the air-column is now:                                  [AIEEE 2012]

A)                    

B)       

C)              

D)       

Correct Answer: A

Solution :

[a]

now, it will act like one end opend and other closed.

so,