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Polarisation

The ratio of ...

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The ratio of sini and sinr =constant Why it is constant? What is refractive index in detail?

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

Q. If a ray of light travels from air to water, then the constant

(= \frac{S i n r}{S i n i})

is the refractive index of _______ with respect to ______.

\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

In Snell’s law,

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

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