Question

Deduce an expression for fringe width in young's double slit experiment

Answer 1

It's in your textbook. Don't need to ask here.
Fringe width = {D×lambda}/d

Answer 2

HEY MATE HERE IS YOUR ANSWER:-


FRINGE WIDTH:-
Fringe width us the distance between two Maxima or between two minima. The Fringe width beta is given by:-

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