Consider a diffraction grating with a grating constant of 500 lines/mm. The grating is illuminated with a monochromatic light source of unknown A screen is placed a distance 1 away and the 1st order maxima is measured to be a distance 41 cm from the central maxima. What is the wavelength of the light expressed in nm?

Consider a diffraction grating with a grating constant of 500 lines/mm. The grating is illuminated with a monochromatic light source of unknown A screen is placed a distance 1 away and the 1st order maxima is measured to be a distance 41 cm from the central maxima. What is the wavelength of the light expressed in nm?