In a Young s double slit experiment with slit separation 0 1 mm one observes a bright 1 40 fringe at angle rad by using light of

Question

In a Young s double slit experiment with slit separation 0 1 mm one observes a bright 1 40 fringe at angle rad by using light of wavelength X When the light of wavelength 2 is used a bright fringe is seen at the same angle in the same set up Given that X and 2 are in visible range 380 nm to 740 nm their values are

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