A 50 cm long organ pipe is filled with air and is open at both ends.The velocity of sound in air at 0$^{\circ}$C is 331 m/s.What is the wavelength of the second mode?
A) 50 cm
B) 75 cm
C) 90 cm
D) 40 cm
E) 63 cm

Question

Quizplus · Accepted Answer

The second mode has a wavelength of 2L/3, where L is the length of the pipe. So, the wavelength of the second mode is 2(50 cm)/3 = 33.3 cm.

A 50 Cm Long Organ Pipe Is Filled with Air ∘^{\circ}∘

A 50 Cm Long Organ Pipe Is Filled with Air $^{\circ}$