A turning fork of frequency 600Hz is sounded over a closed resonance tube. If the first and second resonant positions are 0.130m and 0.413m respectively, calculate the speed of sound in air
-
A.
508.4ms-1 -
B.
480.0ms-1 -
C.
339.6ms-1 -
D.
169.8ms-1
Correct Answer: Option C
Explanation
(v = flambda)
(v = 2f times (l_{2} – l_{1}))
(v = 2 times 600 times(0.413 – 0.130))
(v = 1200 times 0.283)
(v = 339.6ms^{-1})