E D 18 A parallel beam of mono chromatic light o wavelength 5000 A is incident normally on a single narrow slit of width 0 001

Question

E D 18 A parallel beam of mono chromatic light o wavelength 5000 A is incident normally on a single narrow slit of width 0 001 mm The light is focused by a convex lens on a screen placed on the foca plane The first minimum will be formed for the angle of diffraction equal to 1 30 3 15 2 60 4 0

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