In a resonance tube, the first resonance is obtained at 40 cm length, using a tuning fork of frequency 450 Hz. Ignoring end correction, the velocity of sound in air is

In a resonance tube, the first resonance is obtained at 40 cm length,

1.	In a resonance tube, the first resonance is obtained at 40 cm length, using a tuning fork of frequency 450 Hz. Ignoring end correction, the velocity of sound in air is
Answer» 620 m/s 720 m/s 820 m/s 1020 m/s SOLUTION :`(lambda)/(4) = 40` CM = 0.4 `implies therefore lambda = 4 xx 0.4 = 1.6 m , f = 450` Hz Velocity of sound `V = f lambda = 450 xx 1.6 = 720` m/s