Question:
In YDSE bichromatic lights of wavelengths 400nm and 560nm are used. The distance between the slits is 0.1mm and the distance between the slit and the screen is 1m. The minimum distance between two successive regions of complete darkness are:
1)4mm
2)5.6mm
3)14mm
4)28mm
please give the answer and also the calculations
Answer:
4) 28 mm
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