To examine a metal block immersed in water

PHYSICS · Single correct · CBSE · Physics · Sound · Sound

Problem

To examine a metal block immersed in water, an engineer wants ultrasound with a wavelength of

0.50\,\text{mm}

. If the speed of sound in water is

1480\,\text{m\,s}^{-1}

, the frequency that should be selected is closest to (a)

1.48\,\text{MHz}

(b)

5.92\,\text{MHz}

(c)

2.96\,\text{MHz}

(d)

0.296\,\text{MHz}