Optics Question 744

Question: If i^ denotes a unit vector along incident light ray, r^ a unit vector along refracted ray into a medium of refractive index μ and n^ unit vector normal to boundary of medium directed towards incident medium, then law of refraction is

[EAMCET (Engg.) 1995]

Options:

A) i^.n^=μ(r^.n^)

B) i^×n^=μ(n^×r^)

C) i^×n^=μ(r^×n^)

D) μ(i^×n^)=r^×n^

Show Answer

Answer:

Correct Answer: C

Solution:

Snell’s law in vector form is i^×n^=μ(r^×n^)



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