In a Young’s double slit experiment light of wavelength 620nm is used to
Illuminate slits of width 0.3mm. A screen is placed at a distance of 0.9m. Calculate
fringe width (b) distance between 5th and 9th bright fringe on screen.
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a) fringe width is 1.86mm
b) distance between 5th and 9th bright fringe on screen is 7.44mm
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