what is angle of deviation of a prism?
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a ray of light is deflected twice in a prism.
the sum of these deflections is deviation angle.
when the entrance and exit angles are equal,
the deviation angle of ray passing through a prism will be a minimum.
the sum of these deflections is deviation angle.
when the entrance and exit angles are equal,
the deviation angle of ray passing through a prism will be a minimum.
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