are re, light chi wavelength 600 nm ahe ani slit separation 1 mm ahe. fringe width beta = (lambda D)/d asate. parantu, lab madhle amchya screen distance D fakt 1 meter ahe, tyamule maza calculated fringe width 0.6 mm yeto. saglyancha 2.4 mm mhanaycha theva, pn amcha lab manual madhe screen nazdeech thevle ahe. mala fakt 1 meter D ghyayla milala, tyamule maza uttar veglach aala!
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