Physics

Problem

The energy of one mole of photons of radiation of frequency

2 \times 10^{12}

Hz in

\text{Jmol}^{-1}

is (Nearest integer) (Given:

h = 6.626 \times 10^{-34}

Js,

N_A = 6.022 \times 10^{23} \text{ mol}^{-1}

)