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Snell's Law

Assuming n ...

Question

Assuming n $=$ 1.352. Calculate the angle of incidence at AB for which the refracted ray passes through the diagonal face undeviated.

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Solution

from the above figure,
$r = 45 °$
$∴ sin i = 1.352 sin 45$
$= \frac{1.352}{1.414} = 0.9588$
$∴ i = 73.5 °$

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