A sound source emits two sinusoidal sound waves, both of wavelength `lambda`, along paths A and B as
Channel: Doubtnut
Date: 2020-01-26

A sound source emits two sinusoidal sound waves, both of wavelength `lambda`, along paths A and B as shown in figure.The sound travelling along path B is reflected from five surfaces as shown and then merges at point Q, producing minimum intensity at that point.The minimum value of d in terms of `lambda` is :