Two loudspeakers S1 and S2 emit coherent sound waves of wavelength λ = 0.8 S1 m. The two sources have the same initial phase. S₁ is located at a distance 2.4 m from the observer A, and S2 at a distance 2.8 m. 2.4 m a. What is the phase difference between the two sound waves received by the observer? 2.8 m S2 b. Will the observer observe a constructive interference (maximum), a destructive (minimum) or, neither? Explain the reason! λ 3 m 2. Two loudspeakers S1 and S2 each emits sound wave of normal loudness with wavelength ofλ=2 m. The two loudspeakers are synchronized to produce coherent waves with the same initial phase; the two loudspeakers are located relative to the observer as shown in the diagram. Will the observer observe a loud sound (constructive interference), a very faint sound (destructive interference) or just about normal sound (no interference)? Justify your answer by showing the calculation) S1 4 m S2

Two loudspeakers S1 and S2 emit coherent sound waves of wavelength λ = 0.8 S1 m. The two sources have the same initial phase. S₁ is located at a distance 2.4 m from the observer A, and S2 at a distance 2.8 m. 2.4 m a. What is the phase difference between the two sound waves received by the observer? 2.8 m S2 b. Will the observer observe a constructive interference (maximum), a destructive (minimum) or, neither? Explain the reason! λ 3 m 2. Two loudspeakers S1 and S2 each emits sound wave of normal loudness with wavelength ofλ=2 m. The two loudspeakers are synchronized to produce coherent waves with the same initial phase; the two loudspeakers are located relative to the observer as shown in the diagram. Will the observer observe a loud sound (constructive interference), a very faint sound (destructive interference) or just about normal sound (no interference)? Justify your answer by showing the calculation) S1 4 m S2