Two sound waves of equal amplitude and the same frequency reach a point with a phase…

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

Problem

Two sound waves of equal amplitude

3\,\text{cm}

and the same frequency reach a point with a phase difference of

60^{\circ}

. Find the resultant amplitude at that point. (a)

6.0\,\text{cm}

(b)

5.2\,\text{cm}

(c)

3.0\,\text{cm}

(d)

5.8\,\text{cm}