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Reflection

A light ray t...

Question

A light ray travels from optically denser medium to optically rarer medium, if the angle of incidence and refraction at point of incidence are $∠ i$ and $∠ r$ respectively, then find the angle of deviation in terms of $∠ i$ and $∠ r$ .

A

∠ i + ∠ r

.

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B

\frac{∠ i}{∠ r}

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C

∠ i - ∠ r

.

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D

∠ r - ∠ i

.

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Solution

The correct option is A $∠ r - ∠ i$ .

angle of deviation
$δ = ∠ r - ∠ i$

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