Question

WHAT IS PATH DIFFERENCE AND PHASE DIFFERENCE?​

Answer 1

Path difference:-

It is difference of the length of the path travelled by two waves.It is represented as Δx or δ.

Phase difference:-

It is difference between phase of two waves. It is represented by Δφ.

Relation between path difference and phase difference is given by

phase difference (ΔΦ) = (2/λ)* path difference (Δx)

Answer 2

Answer:

The phase difference is the difference in the phase angle of the two waves. Path difference is the difference in the path traversed by the two waves. The relation between phase difference and path difference is direct. They are directly proportional to each other.