1.

The foundamental frequency of an open pipe is N Keeping the pipe vertical, it is submerged in water so foundamental frequency of air column is :

Answer»

N
N/2
2N
3 N/4 .

Solution :For open orgam pipe fundamentle frequency
`v_(0) = (V)/(2L)` = N
for closed pipe
` v_(c) = (V)/(4 ((L)/(2)) ) = (V)/(2L) = N `
`therefore` correct CHOICE is (a) .


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