Light is falling on surface S1 , S2, S3 as shown in Figure. Surfaces on which the angle of incidence is equal to the angle of reflection is/are

To determine which surfaces have an angle of incidence equal to the angle of reflection, we can use the law of reflection. According to this law:

• The angle of incidence (θ₁) is equal to the angle of reflection (θ₂).

Analysis

1. Surfaces S1, S2, S3:

   • We need to evaluate the orientation of each surface in relation to the incoming light rays.
   • For each surface, identify the angle at which light strikes the surface.

2. Determine Angles:

   • If the angle of incidence on a surface matches the angle of reflection, that surface adheres to the law of reflection.

Final Answer

Surfaces where the angle of incidence equals the angle of reflection must be identified based on the orientation shown in the figure. Without the figure itself, we cannot conclude definitively which surfaces satisfy this criterion. Hence, please refer to the figure to analyze surfaces S1, S2, and S3 accordingly. Generally, any surface that reflects light without distortion will satisfy this requirement.