Question

Two coherent sources A and B of radio waves are 5m apart. Each source emits
waves with wavelength 6m. Consider points along the line between two
sources, at what distances, if any, from A is the interference constructive.

Answer 1

Answer:

Solution :

(a) At centre path difference is zero. Therefore, construction interference will be obtained.

(b) λ2=3m. At a distance, where path difference is λ2or3m destructive interference will be obtained.

At P1BP1−AP1=3m=λ2

At P2=AP2−BP2=3m=λ2.