Questions
A parallel beam of monochromatic light of wavelength 5000 Å is incident normally on a single narrow slit of width 0.01 mm. The light is focussed by a convex lens on a screen placed in focal plane. The first minimum will be formed for the angle of diffraction equal to
detailed solution
Correct option is C
First minima sinθ=λd=5×10−710−5sinθ=5×10−2θ=.05rad=0.05×180π=93.14=30Talk to our academic expert!
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In single slit diffraction pattern under bichromatic illumination. If the first minimum with the wavelength 1 is found to be coincident with third maximum of 2, then
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