Physics

Problem

Under water, a whistle produces sound waves of wavelength

0.60\,\text{m}

while the speed of sound in water is

1500\,\text{m s}^{-1}

. The same whistle is blown in air, where sound travels at

340\,\text{m s}^{-1}

. The wavelength of the whistle’s sound in air is closest to a)

1.36\,\text{cm}

13.6\,\text{cm}

6.8\,\text{cm}

60\,\text{cm}