A-concave-lens-of-focal-length-60cm-is-made-of-material-whose-refractive-index-for-red-light-is-1-641-and-refractive-index-for-blue-light-is-1-659-That-for-white-light-is-1-65-It-is-combined-with-a-co
Question Number 41906 by Necxx last updated on 15/Aug/18
Commented by Necxx last updated on 15/Aug/18