Yes, it is true.
The emergent ray is the ray of light which passes through a denser medium(glass) to a rarer medium(air).
yes light changes its direction when it passes form air to glass due to refraction of light coz air has less density n glass is a solid so it has more density due to that when light goes form air to glass then its speed decreases n its always bends towords the normal. but if light will go perpendicularly form air to glass then it will not change its direction.
This is called 'slowing down' and 'refraction'. They're not only apparent, they're real.
There will be refraction when light passes from one substance to the other (for example, from air to water), when the two substances have different indices of refraction, and when light passes the surface at an angle. In other cases, there is no refraction.
its called refraction
Refraction
REFRACTION
You will see what some people call a rainbow, the differing refraction of light frequencies
The emergent ray is the ray of light which passes through a denser medium(glass) to a rarer medium(air).
It happens by the refraction of light.
In reflection the light bounces bach; in refraction the light passes through, but is bent at the interface.
Refraction
refraction
Refraction. White light is a mix of colors in the first place; these colors have different indices of refraction. That is, when moving from air to glass, as in a prism, they will bend at slightly different angles.
Refraction.
It shows color.
Yes...supermassive blackholes are a good example.