A ray of light passing through the centre of curvature of a spherical mirrors retraces its path on reflection. Why?? Proper n relevant reason required no irrelevant answers please(ーー;)
Answers
Answer:
The ray of light on passing through a spherical mirror retraces its path on reflection bcoz the ray of light falls normally on the mirror , it's angle of incidence being 0 degrees ... By laws of reflection, the angle of reflection also goes to be 0 degrees , thus retracing the path of the incident ray .
Hope you understand .
This is because, as the ray of light passes through the centre of curvature of a spherical mirror, it strikes the mirror along the normal,i.e. it is incident on the mirror at 90 degrees. Hence the incident ray coincides with the normal. Therefore angle of incidence=0 so (as we know according to laws of reflection) angle of reflection=0, hence the angle of reflection too becomes zero degree, thus ray of light retraces its path.
Thank You! :)