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What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray ?

Q13. What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?

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S Sayak

The angle of incidence = angle of reflection. since the angle between the incident and reflected ray is 90 degrees. the angle of incidents will be 90/2 =45 degrees

\\Angle \ of \ incidence \ = \ Angle \ of \ reflection \\Angle \ of \ incidence \ + \ Angle \ of \ reflection \ = \ 90\degree \\ 2 \times Angle \ of \ incidence \ = \ 90\degree \\ Angle \ of \ incidence \ = \ 90\degree\div \2 \\ Angle \ of \ incidence \ = \45\degree

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