021. If the angle between the incident roy and the normal to the plane of the mirror is 40°, the angle between the incident ray and the reflectedray will be40°90°80°

021. If the angle between the incident roy and the normal to the pla

1.	021. If the angle between the incident roy and the normal to the plane of the mirror is 40°, the angle between the incident ray and the reflectedray will be40°90°80°
Answer» tion:100 degree.If the angle between the INCIDENT RAY and mirror is 40 degree , then the angle of incidence will be 50 degree. Then the angle of REFLECTION will 50 degree ( angle of incidence = angle of reflection). The angle between the incident ray and the reflected ray will be the sum of angle of incidence and the angle of reflection. Thus 50 degree + 50 degree = 100 degree.