A listener hears a sound of frequency

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

250\,\text{Hz}

. What minimum time interval must elapse for the phase of the vibration at the listener’s ear to advance by

\dfrac{3\pi}{2}

rad? (a)

0.0060\,\text{s}

(b)

0.0015\,\text{s}

(c)

0.0030\,\text{s}

(d)

0.0020\,\text{s}