Yes, it is true.
The emergent ray is the ray of light which passes through a denser medium(glass) to a rarer medium(air).
The word is rainbow. Rainbows occur when light is reflected inside droplets of water and then refracted out into the 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.
Refraction is the bending of light as it passes through different mediums with varying densities. When light travels from a medium of lower density to a medium of higher density, it bends towards the normal, and vice versa. The speed of light changes as it moves through different mediums, causing it to bend.
Refraction of light rays occurs when light passes through a medium with a different optical density, such as glass, causing the light rays to change direction. This bending of light rays is due to the change in speed of light as it moves from one medium to another.
Refraction
When you shine light through a glass block, it is called refraction. Refraction is the bending of light as it passes from one medium, such as air, into another medium with a different optical density, such as glass.
When light passes through a glass block, it undergoes refraction, which is the bending of light as it enters the glass and again as it exits. The speed of light changes as it moves from air to glass, causing the light rays to change direction.
The name of the effect is refraction. Refraction occurs when light passes through a medium such as glass and changes its speed and direction, resulting in bending of the light rays.
A glass window allows transmission of light through refraction and reflection. When light passes through the glass, it refracts and changes direction. Some light may also be reflected off the surface of the glass. Glass itself typically absorbs very little light.
REFRACTION
The phenomenon where light travels through the lens of a telescope is called refraction. Refraction occurs when light passes through a medium like glass, causing the light rays to bend and converge or diverge to form an image.
You will see what some people call a rainbow, the differing refraction of light frequencies
Refraction can be seen when light passes through different mediums such as air and water, causing the light rays to change direction. This phenomenon is visible in everyday situations, such as a straw appearing bent in a glass of water or when light bends as it passes through a prism.
Refraction occurs when light passes through a medium with a different density, such as air to water or air to glass.
Refraction is when light bends as it passes from one medium to another, such as from air to water or glass. This bending occurs due to the change in speed of light as it moves through different materials, resulting in a change in direction. Refraction is responsible for phenomena like the bending of a straw in a glass of water or the formation of rainbows in the sky.
The emergent ray is the ray of light which passes through a denser medium(glass) to a rarer medium(air).