A physics instructor wants to produce a double-slit interference pattern large enough for her class to see. For the size of the room, she decides that the distance between successive bright fringes on the screen should be at least 2.70cm . If the slits have a separation d = 0.0250mm , what is the minimum distance from the slits to the screen when 632.8-nm light from a He-Ne laser is used? (cm)
