5. What does the phrase 'normal incidence'
mean? What are i and r in this case?
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the condition in which wave path is parallel to an interface,such that path is perpendicular to surface .... plzzz follow me.
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Normal incidence The condition in which a wave-front is parallel to an interface, such that the ray path is perpendicular (normal) to the surface. The angle of incidence is zero
The condition in which wave path is parallel to an interface,such that path is perpendicular to surface
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