4. What are the relative intensities of the spectra caused by first order and second order diffraction? 5. In Figure 3, a light from a laser that produces monochromatic green light of 532 nm is used to calibrate a diffraction grating. The diffraction grating is located a distance. x=0.41 m from the transverse scale. The first order diffraction images are located at y= ±0.12 m on the transverse scale. How many lines per inch does the grating have?