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Acids, Bases and Salts
When light travelling through one medium, falls on the surface of another medium, the following three effects may occur at the surface of separation of the two media:
Reflection: A part of the incident light is bounced back into the first medium. This is called reflection of light.
Refraction: Another part of incident light is transmitted into the second medium and diverges or bends from its path at the surface of separation. This is called refraction of light.
Absorption: The remaining part of incident light is absorbed at the surface of separation. This is called absorption of light.
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Define the following terms in connection with reflection of light:
Incident ray, reflected ray, point of incidence, normal, angle of incidence and angle of reflection.
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