Question

Answer This question please​

Answer 1

Explanation:

there are two laws of refraction :

1- the incident ray , the normal at the point of incidence and the refracted ray all lie in the the same plane .

2- for any given pair of media the ratio of sine of the angle of incidence to the sine of the the angle of refraction is a constant this law is known as snell's law .

b-air n1 is a rarer medium and n2 is denser medium.

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