Q1. Answer the following : Francine helped Olivette with her experiment and remi

Question

Q1. Answer the following :

Francine helped Olivette with her experiment and reminded her that the wavelength of the laser was 650 nm. Recall, Olivette measured the distance from the single slit to the screen to be 0.200 m. She also calculated that the distance from the first-order location of destructive interference to the center of the central bright fringe, y, is 0.002 m. Find the lateral width of the slit, as predicted by these measurements and given information. While you may find the answer in m, express your final answer in mm.

Explanation / Answer

distance of firs fringe is given as

y=wavelength*D/d

0.002=650*10^(-9)*0.2/d

we got

d=6.5*10^(-5)m=0.065 mm

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