.A first order bight line is 18cm from the central bright line. The distance from the center of the slits to the first order line is found to be 62.0 cm. If the slits were .0000019m apart. What was the wavelength of the light? What color was the light?

A diffraction grating is illuminated by light of wavelength 4.50 nm. The first order line is 0.50 m from the central bright line, the distance from the center of the slits to the first order dark band is 2.0 m. How many lines are there per centimeter in the grating?

Light of frequency 5.0 x 10 (e 14) Hz illuminates two slits that are .0002m apart. How far from the central bright spot is the first order bright line on a screen 1.5 m from the slits?

Light of frequency 7.5 x 10(e 14) Hz falls on a slit .00015 m wide and produces a first order dark band at 0.65 cm from the center of the central bright band. What is the distance of the screen from the slit?

Please show all work and equations used. Thanks