The frequency of the third overtone of a closed pipe
of length `L_(c)` is the same as the frequency of the sixth
overtone of an open pipe of the length `L_(o).` Then

The frequency of the third overtone of a closed pipe of length Lc is the same as the frequency of the sixth overtone of an open pipe of the length L_o. Then:

If the frequency of the first overtone of a closed organ pipe of length 33 cm is equal to the frequency of the first overtone of an open organ pipe, then the length of the open organ pipe will be

If the frequency of the first overtone of a closed organ pipe of length 33cm is equal to the frequency of the first overtone of an organ pipe, then the length of the open organ pipe will be

if the first overtone of a closed pipe of length 50 cm has the same frequency as the first overtone of an open pipe, then the length of the open pipe is

if the first overtone of a closed pipe of length 50 cm has the same frequency as the first overtone of an open pipe, then the length of the open pipe is

The frequency of the first overtons of a closed pipe of length l_(1) is equal to that of the first overtone of an open pipe of length l_(2) The ratio of their lengths (l_(1) : l_(2) is

The frequency of the first overtone of a closed pipe of length l_(1) is equal to that of the first overtone of an open pipe of length l_(2) . The ratio of their lengths (l_(1):l_(2) is