salalvarryth
contestada

An imaginary line perpendicular to a reflecting surface is called ____refrac_____.
a. a mirror
b. a normal
c. an incident
d. a refracting surface

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Tiendi
not totally sure but i would say a normal? its not refraction or incidence if its perpendicular and i dont think its a mirror if its an imaginary line so yeah normal (normals are always perpendicular to their surface too i think so)

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