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Two slits are made one millimetre apart and the screen is placed one metre away. What is the fringe separation when bluegreen light of wavelength 500 nm is used?

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Fringe spacing `=(Dlambda)/(d)=(1xx5xx10^(-7))/(1xx10^(-3))m`
`=5xx10^(-4)m=0.5mm`
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NCERT GUJARATI-WAVE OPTICS-EXERCISES
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