A string of length fixed at both ends is set into vibration

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

Problem

A string of length

1.2\,\text{m}

fixed at both ends is set into vibration. Two successive resonant frequencies are measured to be

200\,\text{Hz}

and

240\,\text{Hz}

. What is the speed of transverse waves on the string? (a)

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

(b)

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

(c)

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

(d)

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