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प्रश्न
Draw an í- `delta` graph for a mono chromatic raY through a glass prism of a plane and mark
(i) `delta` m, the angle of mínimum devíation
(íí) Any two values of i for which value of `delta` ís same.
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उत्तर
Angle of íncídence vs angle of deviation graph for a prism
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