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What happens to a light ray if it is incident on a reflective surface along the normal? A. The incident ray retraces its original path. B. The incident ray is reflected perpendicular to the normal. C. The incident ray is reflected at an angle to the normal. D. The incident ray is not reflected.

Respuesta :

a light ray is incident on a reflective surface along the normal

so the angle of incident = angle bet. ray n the normal = 0

n angle of incident = angle of reflection

so angle of reflection = 0

ans is A. The incident ray retraces its original path.

The incident ray retraces its original path if a light ray is incident on a reflective surface along the normal.

What is the law of reflection?

  • On reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray.
  • It means if the incident angle is 30° from the normal then reflective angle will be 30°.
  • So if we incident a light ray on a reflective surface along the normal then the incident ray is retraced its original path.
  • Because we incident the light ray along the normal it means the angle between the incident ray and the reflected ray is 0°.

Therefore if a light ray is incident on a reflective surface along the normal, the incident ray retraces its original path.

Learn more about law of reflection here -

https://brainly.com/question/46881

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