In a Young s Double slit experiment first maxima is observed at a fixed point P on the screen Now the screen is continuously

Question

In a Young s Double slit experiment first maxima is observed at a fixed point P on the screen Now the screen is continuously moved away from the plane of slits The ratio of intensity at point P to the intensity at point O centre of the screen a remains constant b keeps on decreasing e first decreases and then increases d First decreases and then becomes constant

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