Physics

Problem

Two sources of sound are moving in opposite directions with velocities

v_1

and

v_2

(

v_1 > v_2

). Both are moving away from a stationary observer. The frequency of both the sources is

1700 \text{ Hz}

. What is the value of

(v_1 - v_2)

so that the beat frequency observed by the observer is

10 \text{ Hz}

v_{\text{sound}} = 340 \text{ m/s}

and assume that

v_1

and

v_2

both are very much less than

v_{\text{sound}}

. a.

1 \text{ m/s}

2 \text{ m/s}

3 \text{ m/s}

4 \text{ m/s}