56. For quantum model, E = hν = hc / λ, where E is photon energy in unit of eV, h is the Planck’s constant (
), ν is the frequency (s -1 ), λ is the wavelength in meters (m), then E✖λ (eV m) is: (A) 1.24 ✖10- 3 (B) 1.24✖ 10- 4 (C) 1.24 ✖10-5 (D) 1.24✖ 10- 6 (E) 1.24✖ 10-7