The speed of sound in air is

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

Problem

320\ \mathrm{m\,s^{-1}}

. A pipe closed at one end has length

1\ \mathrm{m}

, and another pipe open at both ends has length

1.6\ \mathrm{m}

. Neglecting end corrections, both air columns can resonate for sound of frequency (1)

80\ \mathrm{Hz}

(2)

240\ \mathrm{Hz}

(3)

320\ \mathrm{Hz}

(4)

400\ \mathrm{Hz}