28. Light is incident on a diffraction grating. The wavelengths of two spectral lines of the light differ by 0.59 nm and
Posted: Thu Apr 28, 2022 9:44 am
28. Light is incident on a diffraction grating. The wavelengths of two spectral lines of the light differ by 0.59 nm and have a mean wavelength of 590 nm. The spectral lines are just resolved in the fourth order of the grating. What is the minimum number of grating lines that were illuminated? A. 25 B. 250 C. 1000 D. 4000