What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?
A. 60°
B. 45°
C. 90°
D. 180°
Answer:B
What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?
A. 60° B. 45° C. 90° D. 180°