Physics for IGCSE & O level - Rays And Waves (Section 6 - No. 15)
When light travels from air into glass, which of the following happens?
It speeds up and bends away from the normal.
It slows down and bends towards the normal.
It speeds up and bends towards the normal.
It slows down and bends away from the normal.
Explication
Light slows down and bends towards the normal when entering a denser medium like glass.