Question

a light ray oa incident on one face of the glass slab and forms a 40° angle as shown in the given figure. (a) what will be the value of angle of emergence?(b) will the value of angle of refraction be more or less than 40° and why? (c) what is snell's law of refraction?​

Answer 1

Answer:

Answer

Snell's law : According to the Snell's law of refraction , the ratio of sine of angle of incidence to the sine of angle of refraction is constant for a given pair of media .

Refractive index =

sine of the angle of refraction

sine of the angle of incidence

Given : Angles of incidence = 60

∘

Angle of refraction = 32.4

∘

Refractive index =

sine of the angle of refraction

sine of the angle of incidence

Refractive index =

sin32.4

∘

sin60

∘

Refractive index =

0.540

0.866

= 1.603

Explanation:

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