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
A. 620 m/s
B. 720 m/s
C. 820 m/s
D. 1020 m/s
Answer:B
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
A. 620 m/s B. 720 m/s C. 820 m/s D. 1020 m/s