Published by:
CGP EDU Academic Team
Published on: September 12, 2026
Using Young's double slit experiment, a monochromatic light of wavelength 5000 
produces fringes of fringe width 0.5 mm. If another monochromatic light of wavelength 6000 
is used and the separation between the slits is doubled, then the new fringe width will be :
Text Solution
Verified by ExpertsThe correct answer is:
D
Fringe width 
… . (I)
… ..(II)
Divide (II) & (I)
or 0.3mm
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