Question

what is the angle of incidience of a ray if thereflected ray is at an angle of 90 degree to the incidient ray

Answer 1

Answer:

45 degrees

Explanation:

Always, the angle of incidence = the angle of reflection. This means that the angle which the normal makes with the incident ray is the same as the angle which the normal makes with the reflected rays as it is 90 degrees we should divide by two.(90/2 = 45)

I hope this helps