Young’s double-slit experiment with slit separation 0.1 mm, one observes a bright fringe at angle 1/40 rad by using the light of wavelength ?₁. When the light of wavelength ?₂ is used a bright fringe is seen at the same angle in the same setup. Given that 1 and 2 are in the visible range (380 nm to 740 nm), their values are

(a) 400 nm, 500 nm

(b) 625 nm, 500 nm

(c) 380 nm, 525 nm

(d) 380 nm, 500 nm

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