Question

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

Answer 1

Answer:

angle of incidence is 90°

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Answer 2

Answer:

angel of incidence =45degrees

Explanation:

in this case

angle of incidence =angle of reflection

let it be x

angle i = angle r

here ,the difference between angle of incidence and angle of reflection is 90degrees which is given in question

so x+x=90

2x=90

x=90/2

so therefore angle of reflection is 45degrees

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