Question bank/JEE Main/Physics

In the shown figure three slits, separated by
[IMAGE] and illuminated by monochromatic parallel beam
of light of wavelength[IMAGE]. Pis a point on the line
perpendicular to the plane of slits through[IMAGE]. If
I­­_o is the intensity of the wave from each slit and d<<D, then
intensity at p is

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Phase difference between [IMAGE] Since D>>d then apply binomial approximation: [IMAGE] Phase difference between[IMAGE] Now using phase diagram
SUB TOPIC:YDSE

Source: Grass-G / Ph-28 Physics paper FST 16 Jan.docx