A parallel beam of monochromatic light of wavelength 5000 angstrom is incident normally on a single narrow slit of width - Physics - Wave Optics

Question

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

Vara · Accepted Answer

Dear
Student,
Please find below the solution
to the asked query:
d sinθ =m λθ=sin-1mλd=sin-115000×10-100
001×10-3=30o
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A parallel beam of monochromatic light of wavelength 5000 angstrom 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 focal plane. The first minimum will be formed for the angle of diffraction equal to?