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a double-slit experiment is performed with blue-green light of wavelength of 512nm. the slits are 1.2mm apart and the screen is 5.4m from the slits. how far apart are the bright fringes as seen on the screen?

a double-slit experiment is performed with blue-green light of wavelength of 512nm. the slits are 1.2mm apart and the screen is 5.4m from the slits. how far apart are the bright fringes as seen on the screen?

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear Salman
 
Given: λ =512 nm
d = 1.2 mm
D= 5.4 m
Fringe width Δy=?
Solution:
Fringe width= Δy = λD/d =
(512x 10-9m)(5.4 m)=(1.2 x 10-3m)
=2.3 x 10-3 m
 
Regards
Arun (askIITians forum expert)

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