Embibe Experts Solutions for Exercise 4: EXERCISE 14.4

In a large room, a person receives direct sound wave from a source $120 \mathrm{m}$ away from him. He also receives wave from the same source which reaches him after being reflected from $25 \mathrm{m}$ high ceiling at a point midway between them. The two waves interfere constructively for wavelength of (in meter)

Two sound waves having intensities $4$ unit and $9$ unit coming from two coherent sources arrive at a point along the same line simultaneously in same phase. Resultant intensity at the point will be