Calculate the frequency and energy per quantum of a radiation with a wavelength of 200 nm. (c = 3 × 108 ms-1 and h = 6.625 × 10-34 Js)
= 1.5 × 1015 Hz = 1.55 × 1015Hz.
E = hv = 6.625 × 10-34 x 1.5 × 1015
= 9.9375 × 10-19 J
