Question i A laser with a wavelength of 588 nm illuminates two narrow slits. The interference pattern from the double slits is viewed on a screen that is 3.20 m away. Over a distance of 53.0 mm there are i 4.0 bright fringes. What is the spacing between the two slits? : Question 2 A lens placed 130 cm in front of an object creates an upright image 4.00 times the height of the object. The lens is then moved along the optical axis until it creates an inverted image 4.00 times the height of the object. How far did the lens move