Question

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 its length is in water. The fundamental frequency of the air column is now
(a) `f // 2`
(b) `3 f // 4`
(C ) `f`
(d) `2f`
A. 2f
B. f
C. f/2
D. 3f/4

Answer 1

Correct Answer - B

`n_(0)=(v)/(2l)n_(c)=(v)/(4(l//2))=(v)/(2l)`