cse • paper_1 • waves_oscillationscse-2004-subject-02-006
Narrow slit — UPSC CSE 2004 Physics PYQ
Buy PYQ Solution Manual →A narrow slit illuminated by monochromatic light of \lambda = 6400\text{ \AA} is placed at a distance of 3 metres from a straight edge. If the distance between the straight edge and the screen is 6 metres, calculate the distance between the first and the fourth dark bands.
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