38. a muon (u from cosmic rays is trapped by a proton to form a hydrogen-like atom. given that a muon is approximately 200 times heavier than an electron, the l

38. A muon (u from cosmic rays is trapped by a proton to form a hydrogen-like atom. Given that a muon is approximately 200 times heavier than an electron, the longest wavelength of the spectral line (in the analogue of the Lyman series) of such an atom will be B. 6.67 Å D. 13.3 A A. 5.62 A C. 3.75 A