A plane monochromatic wave length of 0.5 m is normally incident on the diaphragm with two narrow slits located at a distance of 1 mm from each other. The interference pattern is formed on the screen, spaced apart from the diaphragm at a distance of 2 m. What will occur in the display point located in front of one of the slots? What should be done away from the screen to a minimum was the second at this point? How to change the width of the fringe?

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