NEET Physics Wave Optics Questions Solved

A parallel beam of monochromatic light of wavelength 5000 Å 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 focal plane. The first minimum will be formed for the angle of diffraction equal to 

(1) 0o

(2) 15o

(3) 30o

(4) 60o

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