A tuning fork of frequency is sounded on a resonance tube

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

Problem

A tuning fork of frequency

500\,\mathrm{Hz}

is sounded on a resonance tube. The first and second resonances are obtained at

17\,\mathrm{cm}

and

52\,\mathrm{cm}

. The velocity of sound is (1)

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

(2)

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

(3)

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

(4)

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