deviations through a prism how to write in long question of answer ?
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Light is deflected as it enters a material with refractive index > 1. A ray of light is deflected twice in a prism. The sum of these deflections is the deviation angle. When the entrance and exit angles are equal, the deviation angle of a ray passing through a prism will be minimal.
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please answer questions and answers class 7 chandni in a page in written in note book
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