Question

what is the difference ( relation) between angle i and angle d in glass prism

Answer 1

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Relation between angle of incidence and angle of emergence :

i+e=A+δ

where i= is the angle of incidence

e= is the angle of emergence

A= is Prism Angle

δ= is deviation angle

when angle of incidence is equals to angle of emergence (i=e) then prism will be in the minimum deviation position.