1. Place a blank sheet of paper on the ground such that part of it is in the sunlight and other part of it is in the shadow.
2. Hold the mirror strip with the slit facing the sun.
3. Let a ray of light from the slit fall on the paper.
4. Now take another mirror strip and place it in the path of this light ray such that the ray coming from first mirror falls on the second mirror as shown in figure.
5. We did not see any other ray of light, apart from the one from the mirror slit, on the paper
6. This effect of the mirror strip on the ray of light is called reflection.
7. The ray of light falling on the mirror is called the incident ray and the ray returning from it is called the reflected ray.
