Question

In the ultraviolet region of the atomic spectrum of hydrogen, a line is obtained at `1026 Å`. Calculate the energy of photon of this wavelength (`h = 6.626 xx 10^(-34)` J-sec)

Answer 1

Correct Answer - `1.937 xx 10^(-18) J`
`E = hv = h (c)/(lamda) = ((6.626 xx 10^(-34) Js) (3 xx 10^(8) ms^(-1)))/((1026 xx 10^(-10) m)) = 1.937 xx 10^(-18) J`