Ultrasound emitted by a dolphin travels through seawater at and has a wavelength of

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

Ultrasound emitted by a dolphin travels through seawater at

1500\,\text{m/s}

and has a wavelength of

3.0\,\text{cm}

. What is the time period of this ultrasound, expressed in microseconds (

\mu\text{s}

)? (a)

2.0\,\mu\text{s}

(b)

20\,\mu\text{s}

(c)

200\,\mu\text{s}

(d)

50\,\mu\text{s}