Find energy of each of the photons which correspond to light of frequency $3\times 10^{15}Hz$.

Question

$\begin{array}{1 1}(a)\;1.988 \times 10^{–18}J\\(b)\;1.988 \times 10^{–10}J\\(c)\;0.988 \times 10–18J\\(d)\;1.988 \times 10–28J\end{array}$