An open pipe of length produces its fundamental note at with frequency

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

Problem

An open pipe of length

0.50\,\text{m}

produces its fundamental note at

20^{\circ}\text{C}

with frequency

343\,\text{Hz}

. Assuming the speed of sound in air varies as the square root of the absolute temperature, determine the fundamental frequency of the pipe at

40^{\circ}\text{C}

. (Take temperature in kelvin.) (a)

366\,\text{Hz}

(b)

355\,\text{Hz}

(c)

332\,\text{Hz}

(d)

343\,\text{Hz}