Q 11-14-022NEETJEE MainMedium
Two sound waves of wavelengths $1.00$ m and $1.01$ m produce $4$ beats per second. The speed of sound is
Answer: (B) $404$ m/s
$v\left(\dfrac{1}{1.00} - \dfrac{1}{1.01}\right) = 4 \Rightarrow v \times \dfrac{0.01}{1.01} = 4 \Rightarrow v = 404$ m/s.
Solution by Sreeraj P, M.Sc Physics