Water waves of frequency travel with speed in a shallow region

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

Problem

Water waves of frequency

5\,\text{Hz}

travel with speed

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

in a shallow region. They then enter a deep region where their speed is

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

. What is the wavelength of the waves in the deep region? (a)

0.20\,\text{m}

(b)

1.25\,\text{m}

(c)

0.80\,\text{m}

(d)

0.40\,\text{m}