Question

1.
Which of the following is Snell's law.
a) n, sin i= sinn
c) n/n = sin r/sini
b)n/n, = sin r/sini
d) n, sin i=constant
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Answer 1

Snell's law gives that

$n_{1} \:sin\: i = n_{2} \:sin \:r$

$\longrightarrow \frac{n_1}{n_2} = \frac{sin \: r}{sin \: i}$

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