The friends spend some time thinking about a beam of light traveling from one me

Question

The friends spend some time thinking about a beam of light traveling from one medium to another medium with higher index of refraction, which strikes the boundary obliquely. Which of Tristan's statements is correct? A) "If the ray moves from a material in which light moves slowly to a material in which it moves more rapidly, then 2 is greater than 1 and the ray is bent toward the normal." B) "When light moves from a material in which its speed is high to a material in which its speed is lower, the angle of refraction 2 is less than the angle of incidence 1 and the ray is bent toward the normal." C) "The light does not deviate from its original direction of propagation, but does propagate more slowly." D) "The beam of light continues unaffected, neither slowing down nor changing direction."

Explanation / Answer

n1 <n2

n = c/v

v1>v2

from snells law

n1 sin1 =n2 sin2

n1 <n2

1 >2

When light goes from rarer medium (low refractive index) to denser medium (high refractive index) then refracted ray travels nowards normal.

Correct option is (B)

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