Question

Define refraction. What happens when a ray passes
a) a rarer medium to a denser medium
b) denser medium to a rarer medium​
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Answer 1

AnSwEr -:

Refraction - the change in direction of a wave passing from one medium to another caused by its change in speed.

a) A rarer medium to a denser medium - When light traveled from a rarer to Dencer medium it bends towards the normal

b) Denser medium to a rarer medium- when light travels from a denser medium to a rarer medium, it bends away from the normal.

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Answer 2

Answer:

Refraction is the bending of light rays after entering a medium where its speed is different. Due to refraction of light, when a ray of light passes from a rarer medium to a denser medium, bends towards the normal to the boundary between the two media. The amount of bending depends on the indices of refraction of the two media. Hence, when a ray of light from air enters a denser medium, it bends towards the normal.♥️

Explanation:

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