Question

In an experiment for determination of the speed of sound in air using resonance tube method, the length of air column that resonates with fundamental mode with a tuning fork is 0.1 m. When its length is changed to 0.35 m, it resonates in first overtone. The end correction is

• A. 0.012 m
• B. 0.025 m
• C. 0.05 m
• D. 0.0024m

Answer 1

Answer: (B)

0.025 m

In fundamental mode end correction

$e=\frac{1}{2}(L_2-3L_1)$

$=\frac{1}{2}(0.35-3(0.1\left)\right)$

$=\frac{1}{2}(0.35-0.3)$

$=\frac{1}{2}\left(0.05\right)$

$=0.025m$