A resonance air column of length 40 cm resonates with a tuning fork of frequency 450 Hz. Ignoring end correction, the velocity of sound in air will be :

Question

A resonance air column of length 40 cm resonates with a tuning fork of frequency 450 Hz. Ignoring end correction, the velocity of sound in air will be : (A) 1020 m/s (B) 920 m/s (C) 820 m/s (D) 720 m/s

Tardigrade Admin · Accepted Answer

Here: Length of column =40 cm =0.4 m Frequency of tuning fork =450 Hz Using the formula n=(v/4 l) or v=450 × 4 × 0.4 =720 m / s

Q. A resonance air column of length $40 c m$ resonates with a tuning fork of frequency $450 Hz$ . Ignoring end correction, the velocity of sound in air will be :

1020 m/s

920 m/s

820 m/s

720 m/s

Here : Length of column $= 40 c m = 0.4 m$
Frequency of tuning fork $= 450 Hz$
Using the formula $n = \frac{v}{4 l}$
or $v = 450 \times 4 \times 0.4$
$= 720 m / s$

Q. A resonance air column of length 40cm resonates with a tuning fork of frequency 450Hz. Ignoring end correction, the velocity of sound in air will be :