what is Fringe width in interference?write down its mathematical expression.
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what is Fringe width in interference?write down its mathematical expression.
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Fringe width is the distance between two successive bright fringes or two successive dark fringes. In the interference pattern, the fringe width is constant for all the fringes. Fringe width is independent of order of fringe. Fringe width is directly proportional to wavelength of the light used.
In YDSE with monochromatic light, fringes are obtained on the screen placed at some distance from the slits. If screen is moved by 5×10−2m towards the slits, fringe width changes by 3×10−5m.
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