Stationary wave of frequency 5 K Hz is produced in a tube open at both ends and filled with air at `300 K`. The tube is oscillating in its first overtone mode.
(a) Find the length of the tube assuming that air contains only nitrogen and oxygen in molar ratio of `3 : 1`.
(b) What shall be the frequency of sound wave used so that the same tube oscillates in its second overtone mode?
(a) Find the length of the tube assuming that air contains only nitrogen and oxygen in molar ratio of `3 : 1`.
(b) What shall be the frequency of sound wave used so that the same tube oscillates in its second overtone mode?
Correct Answer – (a) 6.9 cm
(b) 7543 Hz