The wavelength of the first overtone of a note in a closed pipe of length 33 cm is?

A. 33 cm
B. 44 cm
C. 22 cm
D. 17 cm

Correct Answer:

Option B = 44 cm

Explanation

In a closed tube, the fundamental note occurs when the length of the tube l = (λ)/4,
the first over tone occurs when the length of the tube l = (3)/4λ.
λ = (4)/3 l = (4)/3 x (33)/T = 44 cm