Question

The second order bright fringes from the double-slit is observed to be 10.7 mm from the...

The second order bright fringes from the double-slit is observed to be 10.7 mm from the center line on the screen. The distance between the screen and the slits is that is 1.2 m . If the slits are illuminated with coherent light of wavelength 700 nm, how far apart should the slits be?

Group of answer choices

15.7 μm

35.8 μm

63.0 μm

79.5 μm

0 0
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Answer #1

SOLUTION For nth distance order bright fringe :- from center line on the screen, y=nap For n=2 :- y = 10.7mm = 2 x (700 nm) x

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