When a ray of light strikes a mirror perpendicular, what law does it states

According to the law of reflection, when a ray of light strikes a surface, the angle of this ray (incident ray) with respect to the normal of the surface is equal to the angle that forms the reflected ray with the same normal of the surface.

In other words:

Both the incident ray and the reflected ray and the normal to the surface are in the same plane, in addition, the angle of the incident ray is equal to the angle of the reflected ray.

In this context, when a ray strikes the surface perpendicular to it, both the incident angle and the reflected angle will be zero, since the normal to the surface is also perpendicular to it.

Sample Response: In "The Role of Social Media in the Arab Uprisings,” the authors claim that social media played a huge part in the organization and communication of protesters. They also claim that social media was vital in communicating what was happening with nations outside of the Arab world. The argument is convincing, as the authors use varied forms of relevant evidence, including well-researched studies and verifiable data. Furthermore, they provide commentary to show how social media, in some examples, works better and faster than traditional news sources.

Explanation: