Question

write two activities to understand the phenomenon of total internal reflection;working of optical fibres

(its urgent please send me the answer)​

Answer 1

Answer:

Activity: Place the semi circle glass disc in such a way that its diameter coincides with the interface and its center coincides with center point of the interface. Now send light from the curved side of the semicircular glass disc. Start with angle of incidence (i) equal to 0∘, i.e., along the normal.