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Since the angle of incidence is 0, there is no chance of refraction and so the angle of refraction too becomes 0.
The emergent ray is the ray of light which passes through a denser medium(glass) to a rarer medium(air).
Light bends when it passes at an angle into a medium of a different density. When light passes from a less dense medium into a denser medium, like from space into Earth's atmosphere or from air into water, it bends toward the normal, which is an imaginary line perpendicular to the boundary between the two media where the light passes through. Light passing from a denser medium to a less dense medium bends away from the normal.
If you meant optical density by the term 'denser ' Then the answer is.... The light bends towards normal when it travels from a optically less dense medium to optically dense medium. So angle of incidence is greater than the angle of refraction
It means that the wave changes direction when it passes from one medium to another - for example, from air to water, or from denser air to less dense air.
" The light is bent by refraction, caused by the medium through which it passes"
Refraction.
The bending of light rays as they ener a new medium is called refraction.
When a wave passes from a less dense medium to a denser one, most of the wave energy is answer is reflected FALSE
refraction
A medium with a higher index of refraction, like diamond, is more dense than the medium with a lower index of refraction, like air. If the ray of light is moving from the less dense medium (lower index of refraction), to a more dense (higher index of refraction) the ray of light bends TOWARDS the normal.
refraction