Find energy of each of the photons which (i) correspond to light of frequency 3×1015 Hz. (ii) have wavelength of 0.50 Å.

(i) The energy of photon is E = hν = 6.626 × 10-34 Js × 3 × 1015 m/s = 1.988 × 10-18 J
(ii) The energy of photon is E = hc/λ = 6.626 × 10-34 Js × 3 × 108 / 0.50 × 10-10 m = 3.98 × 10-15 J