Question

What happens when light passes from
1. glass to air
2. air to glass ​

Answer 1

Answer:

Light waves change speed when they pass across the boundary between two substances with a different density , such as air and glass. This causes them to change direction, an effect called refraction . ... the light slows down going into a denser substance, and the ray bends towards the normal.This process is called refraction.

When a ray passes from air into glass the direction in which the light ray is travelling changes. ... This 'bending of a ray of light' when it passes from one substance into another substance is called refraction. The bending of a ray of light also occurs when the ray comes out of glass or water and passes into air.

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Answer 2

$\underline{\huge{Answer:-}}$

• When a ray of light passes from a less dense material (eg air) into a denser material (eg glass or water) it is bent away from the surface between the two materials. This means that in this situation the angle of refraction is always less than the angle of incidence.
• Light waves change speed when they pass across the boundary between two substances with a different density , such as air and glass. This causes them to change direction, an effect called refraction . the light slows down going into a denser substance, and the ray bends towards the normal

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