3. Define the following terms.
a. refraction
b. reflection
c. normal
(its from a 7 class science question)
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custodian Bucci ta Bucci Harrison
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a. Refraction is the bending of a wave when it passes from one medium to another. The bending is caused due to the differences in density between the two substances.
b. The process of bouncing back off the light rays which fall on the surface of an object is called reflection of light
c. It is the line drawn perpendicular to the reflecting surface at the point of incidence. MN is normal.
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