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| 1. |
A ray incident on a plane mirror retraces its path on reflection of why |
| Answer» When the light ray falls obliquely. it is reflected along the same angle. And in this case, since the angle is 180 degrees. It is reflected along the same angle and thus retraces its path.If the ray of light falls on the mirror normally then it is reflected back on the same path. If it falls at some acute angle then it obeys two laws of reflection of lighti. The incident ray, normal and reflected ray are in the same plane.ii. Angle of incidence and reflection are equal. | |