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Draw the path of light ray passing throu...

Draw the path of light ray passing through a prism. Label angle of incidence and angle of deviation in the ray diagram.

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ABC is a prism. `PQ` is incident ray on face `AB`. `NON'` is normal to `AB`.
`/_PQN = i`, is the angle of incidence.
At `Q` , the ray is refracted along `QR and at R`, it is refracted second time, and goes along `RS`.
`/_ P' OR = del`, the angle of deviation.
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