Question

Q.6 Name the part of concave mirror through which a ray of light passes and
retraces its path.​

Answer 1

Answer:

This happens because the ray is coming from the center of the sphere of which this curved mirror is the part and in case of circle normal at a point always passes through the centre of the circle. Since the angle of incidence is 0 the angle of reflection is also 0 degree and this ray retraces its path.