Question

•18) A resonance air column of length 20 cm resonates
with a tuning fork of frequency 450 Hz. Ignoring the
end correction, the velocity of sound in air will be
(1) 920 m/s
(2) 720 m/s
(3) 820 m/s
(4) 360 m/s

Answer 1

Answer:

1) 920 m/s

Precisely 900 m/s

Explanation:

From the equation.

V = fλ