Question

7. The image shows a light ray
incident on a glass prison. The
various angles are labeled in
the image. Which angle shows
the angle of incidence and
angle of refraction,
respectively​

Answer 1

The angle made by the incident ray with the normal to the first face of the prism is called incident angle, which is angle Y here. The angle made by the emergent ray with the normal to the surface when it comes out from the prism after refraction is called emergent angle, which is angle Q here. The angle between the incident ray and the emergent ray is called angle of deviation, which is angle P here. Hence, the correct option is D

Answer 2

Answer:

The incidient ray, refracted ray and normal all lie in same plane. The light after refraction in the surface deviates as as its bend away from normal resulting the formation of spectrum as white incidient light splits, with formation of VIBGYOR with largest wavelength of voilet and shortest wavelength of red.