If a ray is insident at an angle of 90 ° what is the angle of reflection?
Answers
If the angle formed by the reflection of incident ray is 90° then it is angle of reflection is of 90° then the angle formed by the the stricken ray is also of 90° . Because angle of incidence is always equal to the angle of reflection
Answer:
➜Given :
ray is insident at an angle of 90 °
➜To find :
angle of reflection?
➜Solution :
Given the accuracy of what I was taught as a youth (which Tipper Rump disputes at some level of precision) the angle of reflection equals the angle of incidence. Depending on your naming convention,
a) if the 90° incidence angle is perpendicular to the surface, the reflection will be right back to the source.
b) if the 90° incidence angle is measured from the perpendicular to the surface, the the 90° reflection angle will also be 90° from the perpendicular but on the other side. That is, in this case the beam will continue in the same direction it started in and just graze the surface (tangentially, if the surface is concave down) or travel parallel to it if it is flat