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Laws of Refraction

In Snell’s la...

Question

In Snell’s law,

$\frac{sin i}{sin r}$ = $\frac{v_{1}}{v_{2}}$ = constant
This constant is called as:

A

reflective index

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B

light index

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C

refractive index

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D

none of these

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Solution

The correct option is C
refractive index

The constant is called as refractive index. By Snells law, refractive index is proportional to the ratio of angle of incidence to angle of refraction.This can further be equated to the ratio of speed of light in the two media.

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Similar questions

\frac{sin i}{sin r} = c o n s t a n t

Q. A Ray of light is incident in medium one on a surface that separates medium one from medium to let V1 and V2 represent the velocity of light in medium one and medium to respective also let n12 and n21 respect the refractive index of medium one with respect to medium 2 and refractive index of medium two with respect to medium 1 respectively. if i and r denote the angles of incidence and refraction then
a)sin i/sin r=n12=v2/v1
b)sin i/sin r=n21=v2/v1
c)sin i/sin r=n12=v1/v2
d)sin i/sin r=n21=vi/v2

Q. Why Sin i/Sin r is constant? Explain

v_{1}

v_{2}

are the speeds of light in medium 1 and 2, respectively then, according to Snell’s law,

\frac{s i n i}{s i n r}

Q. How do you verify experimentally that

\frac{sin i}{sin r}

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