NEET 2021 Model Test Paper 3

At any point along the path 1, path difference between the waves is 0. Hence maxima is obtained all alone the path 1. At any point along the path 2, path difference is 1.5 λ a winch is odd multiple of

λ

2

. so minima is obtained all along the path 2.
oralong path (1)
path difference =0
observed all along the path