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In a light interference pattern, alternate dark and bright fringes are seen. Why are the bright fringes formed?

Respuesta :

Young s Double-Slit Experiment verifies that light is a wave simply because of the bright and dark fringes that appear on a screen. it is the constructive and destructive interference of the light waves that cause such fringes. 

Its constructive. I just answered with destructive and it was wrong.

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