Why does a light ray bend -towards- the normal when passing from an optically rarer to a denser medium? Why not away from the normal?
Dear Student ,
When a light ray travels from one medium to another ,its speed changes. Speed of light decreases when it travels from rarer to denser medium. Therefore it bends towards normal.
Regards
When a light ray travels from one medium to another ,its speed changes. Speed of light decreases when it travels from rarer to denser medium. Therefore it bends towards normal.
Regards