Electromagnetic waves emanating from a point A (in air) are incident on a rectangular block of
Channel: Doubtnut
Date: 2021-11-02

Electromagnetic waves emanating from a point A (in air) are incident on a rectangular block of material M and emerge from the other side as shown. The angles i and r are angles of incidence and refraction when the wave travels from air to the medium. Such paths for the rays are possible