Question

If the angle of incidence and angle of deviation are known then how to find the angle of emergence ??

please tell me​

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Answer 1

• angle of emergence is a straight line⊥and angle of elevation is uper line ∠and deviation is down line

Answer 2

for example:-

Q)  if the angle of incidence is 30 and angle of deviation is 43 then what is a

angle of emergence

A)  Angle of prism=sum of angle of refractions angle of deviation=incident angle+emergent angle-prism angle. 43=30+emergent angle-prism angle. 43-30=13=emergent angle -prism angle. Prism angle=emergent angle-13. So 43=30+emergent angle+emergent angle-13. 43-30+13=2(emergent angle). Therefore,26=2(emergent angle) emergent angle=26÷2=13 so answer is 13.

hope it helps