On a stretched string

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

On a stretched string, a crest is observed to move

7.2\,\text{m}

3.0\,\text{s}

. In the same interval, a point on the string executes exactly

12

complete oscillations. Calculate the wavelength of the wave. (a)

0.30\,\text{m}

(b)

0.60\,\text{m}

(c)

1.80\,\text{m}

(d)

0.20\,\text{m}