Question

35.12. Coherent light with wavelength 400 nm passes through two very narrow slits that are separated by 0.200 mm and the interfer- ence pattern is observed on a screen 4.00 m from the slits. (a) What is the width (in mm) of the central interference maximum? (b) What is the width of the first-order bright fringe?

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Answer #1

fringe wdth=w=lambdaD/d

lambda is wavelength of light

D is screen distance from slit

d is separation between slits

(a d D SCYe en mn

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