Figure shows wavefront P Passing through two systems A and B, and emerging as
Channel: Doubtnut
Date: 26/07/2020

Figure shows wavefront P Passing through two systems A and B, and emerging as Q and then as R. Then systems A and B could, respectively, be  img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/BMS_V04_C02_E01_069_Q01.png" width="80%"