Two sound sources radiating in phase at a fre-
quency of 540 Hz interfere such that maxima
are heard at angles of 0◦ and 21◦ from a line
perpendicular to that joining the two sources.
quency of 540 Hz interfere such that maxima
are heard at angles of 0◦ and 21◦ from a line
perpendicular to that joining the two sources.