In the below figure, the angle of reflection is
By law of reflection, angle of incidence is equal to angle of reflection.Hence i = r =60 degree
According to law of reflection, How this statement(angle of incidence = angle of reflection= 90 degree) is correct? how both equal to 90 or 0 degree?
What is the angle of incidence of a ray if the reflected ray is at an angle of 90 degree to the incident ray?