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

Question

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

Examsnet · Accepted Answer

Correct Answer is :  if the material has a refractive index less than zero.

KVPY SX SB Exam 2015 Question Paper