A laser beam of wavelength λ=632. 8 nm shines at normal incidence on the reflective side of a compact disc. The tracks of tiny pits in which information is coded onto the cd are 1. 60 μm apart.

Dna is a polymer of which consist of a sugar, a phosphate group, and a a. amino acids; nucleotide b. nucleic acids; nucleotide c. nucleotides; nitrogenous base d. nucleotides; nucleic acid e. proteins; nucleotide