Question

In the infrared region of the atomic spectrum of hydrogen, a line is obtained at `3802 cm^(-1)`. Calculate the energy of this photon `(h = 6.626 xx 10^(-34) J` sec)`

Answer 1

Correct Answer - `7.56 xx 10^(-20) J`
`bar(v) = 3802 cm^(-1), E = hv = h (c)/(lamda) = hc bar(v) = (6.626 xx 10^(-34) Js) (3 xx 10^(10) cm s^(-1)) xx (3802 cm^(-1)) = 7.56 xx 10^(-20) J`