T = 0.50*4/340
do
f = 1/T = 340/2 = 170 Hz
The speed of sound in air is 350m/sec the frequency of the fundamental node emitted by tube length 50cm open one end is:
3 answers
http://www.physicsclassroom.com/class/sound/Lesson-5/Closed-End-Air-Columns
its one end is close so we will cosider it as closed or open i mean we have to apply the closed formula or open one