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Two slits separated by 2.00mm are illuminated by 660nm light. How many total bright fringes will be visible on a screen

Posted: Sun May 22, 2022 9:24 am
by answerhappygod
Two slits separated by 2.00mm are illuminated by 660nm light.
How many total bright fringes will be visible on a screen 2.50m
wide that is 1.50m away from the slit? (Assume the bright central
fringe is visible at the exact center of the screen).