A 650 nm laser illuminates a 100 lines/mm diffraction grating, producing a diffraction pattern on a screen (see figure). How far is the diffraction grating from the screen?
given
lamda = 650 nm = 650*10^-9 m
distance between central nright fringe to 1st bright fringe, y1_max
= 7 cm
= 0.07 m
line spacing on the grating, d = 1 mm/100
= 10^-2 mm
= 10^-5 m
let R is the distance from grating to screen.
we know, y1_max = lamda*R/d
==> R = y1_max*d/lamda
= 0.07*10^-5/(650*10^-9)
= 1.08 m <<<<<<<<<<<<-----------------Answer
A 650 nm laser illuminates a 100 lines/mm diffraction grating, producing a diffraction pattern on a...
Question 10 30 pts A 650 nm laser illuminates a 100 lines/mm diffraction grating, producing a diffraction pattern on a screen (see figure). How far is the diffraction grating from the screen? SCIENCESOURCE 7 cm SCIENCESOURO Upload Choose a File
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